2013 spicy swan_fb_pb_post_collection_27042013

Spicy SWAN PB FB post collection up to April 27th 2013

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http://www.slideshare.net/PieroBelforte1/tdr-measurement-of-rg58-coaxial-cable-s-parameters-120413

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http://www.youtube.com/watch?v=wuHdcEot5Uk

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Hey Spicy fans! As part of our commitment to continuous improvement, the interface is being redesigned to be more user friendly and intuitive .. watch for the next update coming soon!

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Cisco Systems adopts Spicy SWAN for simulation!

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New video by user request, making wires and simulation with Spicy on ipad .. http://youtu.be/Ka8qKTFGUb8 Note we have a YouTube channel with many more tutorial videos, linked from our website ... online at: youtube.com/user/ischematics

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Played with Spicy today on a HUGE mac monitor at best buy ... very cool ... the new all-in-one touchscreen PCs with large monitor offers new possibilities for Spicy and for circuit design!

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Interworking of Ipad mini and Mac mini on the previous circuit.

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See All Messages No new messages.

When you get a new message, it will appear right here. To turn messages off, uncheck the box next to the Messages option in youradmin settings.

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SWAN simulation of a Fault Insertion on a 10Gbps CML net using the new differential probes of HiSAFE+ to be used by Cisco Systems.

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Spicy Schematics and Spicy SWAN v2.4.6 available now on web and for ipad on the app store. Update today! Includes minor bug fixes and new features including the ability to now set the .OPTIONS line properties in spice!

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https://www.ischematics.com/webspicy/report.py?RCODE=22668456634860647223a#newwin

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CML (Current Mode Logic) 10 Gbit/sec microstrip interconnection: EYE DIAGRAMS(2).

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CML (Current Mode Logic) 10 Gbit/sec microstrip interconnection: EYE DIAGRAMS.

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CML (Current Mode Logic) 10 Gbit/sec microstrip interconnection: SWAN results.

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CML (Current Mode Logic) 10 Gbit/sec microstrip interconnection.

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A 200ps/div detailed view of previous plots.

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3

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Alexandre da Silva

about a week ago

Robert Grange

about 2 weeks ago

Gustavo Stein

about 2 weeks ago

Mostafa Quarrach

about 2 weeks ago

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Spicy Schematics - ischematics.com http://www.slideshare.net/PieroBelforte1/tdr-measurement-of-rg58-coaxial-cable-s-parameters-120413

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Shoji Iwasaki

about 2 weeks ago

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about a month ago

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about a month ago

See Your Ad Here Spicy Schematics - ischematics.com

SPICY is fast, intuitive, and allows you to literally draw circuits with your fingers. Create, save,... Like · Piero Belforte likes this.

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SPICY is fast, intuitive, and allows you to literally draw circuits with your fingers. Create, save,... Like · Piero Belforte likes this.

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Software SPICY is fast, intuitive, and allows you to literally draw circuits with your fingers. Create, save, edit, share, simulate with spice, and export and send screenshots to email, SPICY is a must have for students and working engineers alike. iPad,Web About

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Spicy Schematics - ischematics.com shared a link.

17 hours ago


Tdr measurement of rg58 coaxial cable s parameters 120413

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9

www.slideshare.net

A RG58 CU coaxial cable is characterized and modeled usinf SWAN/DWS techniques.

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5. Recent Posts by OthersSee All

o

Chadd Haller

i just bought it. ill let you know what i think in a day or 2

1 · April 14 at 8:32pm

o

Lou Rossi

Can someone point me to a tutorial for creating a part decal? I'd like to build a library of vacuum tubes. Thanks.

10 · March 19 at 1:44am

o

Mussa Ba

Hi, I am looking to build circuit diagram solar panel control system to recharge 12V Battery. Do anyone know the good circuit diagram please ?

4 · February 10 at 2:45pm

o

Piero Belforte

TDIODE_SWAN January 30 at 11:25pm

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April 16


RG58 coaxial cable behavioral model optmization using DWS

www.youtube.com

The optimization steps of the BTM (Behavioral Time Model) of a popular RG58 coaxial cable are shown. The starting point is a 10-cell BTM model extracted form...

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IEEE Spectrum

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April 5 via mobile

Hey Spicy fans! As part of our commitment to continuous improvement, the interface is being redesigned to be more user friendly and intuitive .. watch for the next update coming soon! Like · · Share

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March 27

Cisco Systems adopts Spicy SWAN for simulation!

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March 19

New video by user request, making wires and simulation with Spicy on ipad .. http://youtu.be/Ka8qKTFGUb8 Note we have a YouTube channel with many more tutorial videos, linked from our website ... online at: youtube.com/user/ischematics

Spicy Schematics - Wiring and Simulation on Ipad

youtu.be

Spicy Schematics - Wiring and simulation on ipad http://ischematics.com https://www.facebook.com/SpicySchematics http://groups.google.com/group/spicy-schemat...

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March 17




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Played with Spicy today on a HUGE mac monitor at best buy ... very cool ... the new all-in-one touchscreen PCs with large monitor offers new possibilities for Spicy and for circuit design!

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March 11

Interworking of Ipad mini and Mac mini on the previous circuit.
















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March 10

SWAN simulation of a Fault Insertion on a 10Gbps CML net using the new differential probes of HiSAFE+ to be used by Cisco Systems.


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March 10

Spicy Schematics and Spicy SWAN v2.4.6 available now on web and for ipad on the app store. Update today! Includes minor bug fixes and new features including the ability to now set the .OPTIONS line properties in spice! Like · · Share


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March 8


Spicy Schematics Homepage

www.ischematics.com

Spicy Schematics - Electronic Circuit Schematic Capture for Tablet and Web - works

with iPad, Web - Homepage

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March 8






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CML (Current Mode Logic) 10 Gbit/sec microstrip interconnection: EYE DIAGRAMS(2).

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March 8

CML (Current Mode Logic) 10 Gbit/sec microstrip interconnection: EYE DIAGRAMS.
















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March 8

CML (Current Mode Logic) 10 Gbit/sec microstrip interconnection: SWAN results.














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March 8

CML (Current Mode Logic) 10 Gbit/sec microstrip interconnection.














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March 5

A 200ps/div detailed view of previous plots.















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March 5

Removing via holes ...SWAN mode sim results.















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March 5

Removing via holes effect on the previous 10Gbit/sec differential interconnects...















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March 5

....connecting a 10Gbit/sec Binary Pattern generator to the coupled traces including via holes: SWAN sim results.















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March 5

And now...trying to see what happens connecting a 10Gbit/sec Binary Pattern generator to the coupled traces including via holes.















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March 5

Comparison between actual measures (Black) and SWAN sims of the previous TDR setup. TDR: 7S12.














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March 5

Sim results of the previous simulative setup.














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March 5

SWAN simulative model of the full TDR setup related to coupled microstrips , via holes and pads and TDR cable tip.















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March 5

Detail of via and related pad connected to microstrip traces.














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March 5

Detail of TDR semirigid cable tip connected to the microstrip.












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31.


March 4

SWAN sim results of S-params measure of previous coupled microstrip model.















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March 4

Optimized SWAN micro-behavioral model of coupled microstrips.














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March 4

Actual coupled microstrips on a FR4 substrate.















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34.


March 4

FYI, on Spicy for Web, you can now set some of the .OPTIONS line parameters for spice simulations. Some circuits converge better with RSHUNT or GMIN specified differently for example, and you can also choose the integration method of GEAR or TRAP .. defaults are TRAP, RSHUNT off, and GMIN=1e-12 and you can select the default as well. This is available now on Spicy for Web, and will be available on ipad for the next release coming soon. Like · · Share

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35.


February 25

Results of previous SWAN TDR setup of a coupled pair of pcb traces (microstrips).

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February 25

SWAN TDR setup to characterize a coupled pair of pcb traces (microstrips).

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February 24

DIGITAL DIFFERENTIATOR RESPONSE to a SINE INPUT.


















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February 24

SWAN implementation of a simple DIGITAL DIFFERENTIATOR














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February 23

New Video on our YouTube Channel, How to Make Wires:http://youtu.be/7P5UMFph8Pk

New Wiring Method and New Probes - Spicy v2.4.5









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youtu.be

Spicy Schematics - Group Select, Copy/Paste Example (no audio) http://ischematics.com https://www.facebook.com/SpicySchematics http://groups.google.com/group...

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40.


February 22

Ok, so with Spicy Schematics you have everything you need for circuit schematic design and simulation with professional-grade spice, ... but what if you need to do high speed digital simulations, with hundreds of RC networks? How about tra...See More


ischematics.com



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February 20

To learn the differences between SWAN and Spice, here the new link : https://docs.google.com/file/d/0Bx-ZqV10CSiNTmxPM0RjTmZNSEE/edit

2013_SpicySWAN_CONCEPTS.pdf - Google Drive

docs.google.com

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42.


February 20

VOUT vs VIN CIRCULAR ORBITS of previous Digital Integrators.






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February 20

Results of comparison between delayed VCCS and H(z) implementations of a digital integrator,T=10ns SINE INPUT F=100KHz














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February 20

Results of comparison between delayed VCCS and H(z) implementations of a digital integrator,T=10ns SINE INPUT F=100KHz















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February 20

Sampled digital domain (SWAN) : Comparison between delayed VCCS and H(z) implementations of a digital integrator,T=10ns SINE INPUT F=100KHz















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February 19

SWAN: unit step response of H(s) = 1/s (ideal integrator) transfer function.












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February 19

Very nonlinear source example built from trig expressions in spice ... see example page for more. http://www.ischematics.com/example.html













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February 19

Here the SWAN sim results of the previous FI setup.

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49.


February 19

A practical application of the BTM wire model: brute force fault insertion on a high-speed clock interconnect (2Ghz).


















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February 19

SWAN sim results of the previous setup (reflected waves).













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February 19

This SWAN setup compares the BTM model of the wire loop to an optimized (L+TL) circuital model.















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February 19

PWL fitting of CSA803 response of the 9cm wire loop.













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February 19

One-port TDR (CSA803) characterization of a 9cm long AWG18 wire loop.
















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February 16

VOUT and power at capacitor C0 spectra of the WIEN oscillator are shown here.














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February 16

Here you will find the sim report of WIEN OSCILLATOR:https://www.ischematics.com/webspicy/report.py?RCODE=28008276605001616111a#newwin


www.ischematics.com













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56.


February 16

Here a collage of SWAN sim results of the WIEN OSCILLATOR.

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57.


February 16

A WIEN oscillator in SWAN mode.

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58.


February 14

Voltage waveform spectrum of the nonlinear LC oscillator.

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59.





















57

February 14

V-I orbits related to previous nonlinear LC free-running oscillator.

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60.


February 14

SWAN mode simulated voltage waveform related to nonlinear LC oscillator.



















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61.


February 14

Free running LC oscillator with NON LINEAR capacitor.














59

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62.


February 14

Response of previous RC circuit with nonlinear C.














60

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63.


February 14

SWAN model of a NONLINEAR CAPACITOR from its basic differential equation.












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64.


February 14

Sim results of previous system solver icluding XY trajectories.















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65.


February 14

Here the sim results: the unknowns X Y and Z are plotted versus time.













63

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66.


February 14

Another example of how SWAN can be used to solve a higher order system of nonlinear differential equations.












64

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67.


February 12

Spicy SWAN Interworking between PC and Ipad Mini.














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68.


February 10

Sim result of previous LORENZ ATTRACTOR computational blocks diagram as XY trajectory














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69.


February 10

LORENZ ATTRACTOR implementation in SWAN mode.















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70.


February 10

fyi, we have two new libraries of examples in the Online Circuit Library within Spicy .. There are buttons there to open them easily and you can download the circuits .. note that this is available now on Spicy for web, but not yet in the ipad version, we are waiting for Apple to approve the latest release















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71.


February 9

INTEGRATORS error (difference between opamp and ideal integrator) changing opamp parameters.












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72.


February 9

Here the detailed view of the difference between the output voltages of the two models.














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73.


February 9

Here the result plots of the INTEGRATORS circuit.














71

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74.


February 9

SWAN simulation and comparison of two INTEGRATOR models.












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75.


February 8

Here the digital mode plot of previous example.
















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76.


February 8

A very simple 3-input AND circuit implemented using SWAN voltage controlled switches with switching threshold of .5V













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77.


February 7

Here the chaotic V-I orbits related to RLDIODE CIRCUIT (SWAN mode,DWV plot)
















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78.


February 7

Here the sim result comparison of previous RLDIODE circuit sims in SWAN vs Spice modes.
















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79.


February 7

A very simple RL DIODE circuit showing a CHAOTIC behavior













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80.


February 5

Plots of SWAN errors vs tstep values for the 50Mhz LC oscillator.














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81.


February 5

This collage shows the comparison between Spice and SWAN modes when simulating the previous free-running 50Mhz LC oscillator.















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82.

Spicy Schematics - ischematics.com commented on a link.

February 5

Accuracy comparison between Spice mode and SWAN mode for a LC free running oscillator (50Mhz) compared to a sin source (to be run in Spce and SWAN mode for comaparison)https://www.ischematics.com/webspicy/report.py?RCODE=26441004771723520648a#newwin.












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80

Spicy Schematics

www.ischematics.com


with iPad, Web - Chat!

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83.


February 4

Here the frequency spectrum of the voltage of the 50Mhz oscillator (SWAN mode).

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81

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84.


February 4

Here the SWAN mode report of he simplest LC 50Mhz free oscillator. https://www.ischematics.com/webspicy/report.py?RCODE=62433800025120153633a#newwin












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82


www.ischematics.com



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85.


February 2

SWAN mode: frequency response of the previous CHAIN TEN 5th-ORDER LOW-PASS CHEBYSHEV FILTERS ( wc = 10MEGRAD, fc = 1.59MHz ).

http://www.facebook.com/l.php?u=https%3A%2F%2Fwww.ischematics.com%2Fwebspicy%2Freport.py%3FRCODE%3D62433800025120153633a%23newwin&h=KAQFUpu7JAQHY7W66pfQ_Vwr9ZPOrhMi2gNAzurkrxLLXYw&enc=AZOrrJ5C7TNVlQj5jblhExAKuMkUq59LiSRCmF_LNvKms9Wwi5l75UC57skO-8cgqQ9anA5XoZVHfsQmBT0JHBEQ&s=1












83

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86.


February 1

SWAN mode STEP RESPONSE OF A CHAIN of LOW-PASS TEN 5th-ORDER LOW-PASS CHEBYSHEV FILTERS ( wc = 10MEGRAD, fc = 1.59MHz ). The filters transfer functions are described by their poles in the S-PLANE. https://www.ischematics.com/webspicy/report.py?RCODE=31843823081086012466a#newwin












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84


www.ischematics.com



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87.


February 1

Here you can find a SCREENSHOT GALLERY related to SWAN/DWS sims in several fields of application, recently carried out by Piero:https://picasaweb.google.com/118285010585894969594/DWSIMAGES#5729896428676687522

DWS IMAGES

picasaweb.google.com

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85

Photos by piero belforte, Mar 29, 2012 - Selection of DWS (Digital Wave Simulator)

Screenshots by Piero Belforte

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88.


February 1

Congratulations Spicy, we now hit 200 FB likes! Thanks everyone ... remember if you like Spicy, please help by posting a good review on itunes .. it helps us support development of the app .. we have only a handful of reviews and most of the time from the few who wanted something else and were not happy ... but 200 FB likes means maybe we can get 200 good reviews on itunes! That would help us out a lot ... just go to itunes, search ischematics.com, and you can review the free, or full or now swan versions, which ever you like .. (or review all if you like) ... :) 2Like · · Share

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89.


January 29

The concept behind Spicy SWAN is that the user can choose between two fully COMPLEMENTARY sim engines (Spice,DWS), like it happens for HYBRID ENGINE cars. SWAN/DWS maps the circuit under analysis on an equivalent DIGITAL WAVE NETWORK so th...See More

















http://www.facebook.com/l.php?u=http%3A%2F%2Fwww.ischematics.com%2Fimages%2F2013_DWS_TIMELINE_270113.jpg&h=JAQHxIwAhAQFrv2p1eq_JFhX1WYSWeXecAAZ7Ah5E6NNLVg&enc=AZMg-hLzVeb5MvLN3lZNdGdazc3w0DnE9uLD2VH1-v0vEckCjldBfflpoN-ZUr6DpKIT90VLpdhJx4psh9BzewTC&s=1



86

http://www.ischematics.com/images/2013_DWS_TIMELINE_270113.jpg

www.ischematics.com

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90.


January 28

SWAN/DWS: a 4-decade long high tech project.

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87

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91.


January 28

SWAN/DWS story. https://docs.google.com/file/d/0Bx-ZqV10CSiNaG5yaW1JWi1EWjQ/edit










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88

2013_SWAN_DWS_STORY_270113_PB.pdf - Google Drive

docs.google.com

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92.


January 25

Leonardo da Vinci's version of Spicy SWAN (1510).

http://www.facebook.com/l.php?u=https%3A%2F%2Fdocs.google.com%2Ffile%2Fd%2F0Bx-ZqV10CSiNaG5yaW1JWi1EWjQ%2Fedit&h=DAQEg5-yaAQG1o3tbPC2YDmqRJnyCxBbc0L9BkcW3xFKiyw&enc=AZMmYPNjpP0T47LVjJWpAdu_obKhNNHpepZrKxqZd3jo44_FxPa2v-nq8QfcvBnnIBxS6gZfbluAS15d7Yxv-x44&s=1















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93.


January 25

EFFECTS of TDR PULSE RISE TIME on RESPONSE.














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94.


January 24

Detailed view of TDR reflected wave related to ckt TDR_LINE_CAP_DISTR.

















91

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95.


January 24

Here the results of previous circuit TDR_LINE_CAP_DISTR














92

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96.


January 24

Yet another example on how Spicy SWAN can be applied to the simulation of TDR measures : a uniformely C loaded segment of Transmission Line.

















93

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97.


January 24

INDUCTIVE discontinuity: TDR response.
















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98.


January 23

SWAN sim of a TDR measure on a cable with capacitive discontinuity: results.














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99.


January 23

SWAN sim of a TDR measure on a cable with capacitive discontinuity.















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100.


January 22

TDR (Time Domain Refectometer) basics: measure on a 75 ohm ideal cable (length=1m), simulated results (SWAN mode).
















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101.


January 22

TDR (Time Domain Refectometer) basics: measure on a 75 ohm ideal cable (length=1m).















98

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102.


January 20

Using DWS probes in SWAN mode: results.
















99

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103.


January 20

Using DWS probes in SWAN mode.














100

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104.


January 19

Spicy SWANs take off.















101

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105.


January 19

Website re-do! Check out our new homepage look! This comes as Spicy version 2.4.2 is coming out soon, and Spicy SWAN on the way! Also note that our Spicy Circuit Simulator iPhone utility has a whole new look ... Look out for the coming updates with many new features!














102

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106.


January 17

Example of SWAN mode instantaneous power monitoring.
















103

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107.


January 17

The schematic related to previous short circuits trials(SWAN).














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108.


January 17

SWAN mode simulated remake of short circuits trials carried out by Piero (CSELT, 1974) on logic drawers of the first Italian fully digital Telephone Exchange (Gruppi Speciali) to increase their reliabilty : https://www.ischematics.com/webspicy/report.py?RCODE=64126237163188587058a#newwin














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105

Spicy Circuit Schematics & Simulation Capture - Design Report © 2011,2012

iSchematics.com

www.ischematics.com


with iPad, Web - Design Report

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109.


January 11

SIMPLE FULL WAVE RECTIFIER WITH LC RIPPLE FILTER.












106

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110.


January 10

New feature on Spicy Web (coming soon to ipad) .. there are now two methods for drawing wires .. if you have snap to pin ON (default) when you draw wires it will try to snap to the nearest part pin if there is one nearby .. this is particul...See More














107

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111.


January 9

Spicy is looking good! We are enhancing the GUI, making wiring operation better once again, and adding new features! .. live on Spicy Web soon, and out on ipad in the next update













108

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112.


January 5

Jan 5, 2013 5:00am

new video on how to make wires using the new simpler method ... captions available on youtube version










https://www.facebook.com/photo.php?v=3613039904112



109

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113.


January 4

Spicy has updated our web version (ipad will follow soon) to have a new simple method for making wires .. just click the wire button, then click and drag your wire .. when you lift up its done ... it also will start at the nearest part pin automatically to help you out! ... this is as it should have been done, and we know a few users have asked for this, so try it out on the web today, and we will roll it out on ipad soon! 3Like · · Share

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114.





https://www.facebook.com/ajax/sharer/?s=11&appid=2392950137&p%5B0%5D=3613039904112
















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January 4

FYI, the next version of Spicy is packed with enhacements, including new SIMPLE wiring procedure, and other enhancements! look for it soon on the app store and on the web! 1Like · · Share

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115.


January 1

Happy New Year from Spicy! Here is a good laugh to start out the new year!

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116.


December 30, 2012

New SWAN ART image collection just created by Piero Belforte is available on You Tube: http://www.youtube.com/watch?v=7LH4X0xeyhk

SWAN ART (2)

www.youtube.com

New collection of images created by Piero Belforte in 2012 from simulation of electrical circuita using DWS/SWAN (Digital Wave Simulator/Simulation by Wave A...

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117.


December 22, 2012

Spicy updated to v2.4.1! This version has enhanced plotting and reporting capabilities, a new author information feature to add notes and information to each netlist, large plot area, and minor bug fixes. Have a happy new year, and keep on simulating!



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December 20, 2012

Here the schematic of the basic RLT cell modeling the skin effect for a 5mm long RG58 coax cable.















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December 20, 2012

FO (Free Oscillation) test for a 91.5m RG58 coax cable.
















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December 16, 2012

Examples! https://www.ischematics.com/webspicy/report.py?RCODE=63146822606587453041a https://www.ischematics.com/webspicy/report.py?RCODE=84672441348440018332a https://www.ischematics.com/webspicy/report.py?RCODE=70361183154561622212a https://www.ischematics.com/webspicy/report.py?RCODE=55105550210441723828a












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iSchematics.com

www.ischematics.com



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December 16, 2012

DOUBLE COMET STAR.

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December 11, 2012

Connecting together 1000 LRT cells the model of a 50m long coax cable is obtained. Here the V-I plots related to free oscillations of the cable are shown.















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December 10, 2012

New Feature (Available in Spicy WEB, coming soon to Spicy for ipad): You can now add notes to your schematics to include in the netlist .. Author, date, and a free textarea ... whatever you type will be added to the netlist, and when you save the schematic it saves with the file
















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December 10, 2012

Connecting together 10 5cm long cells corrisponding to 50cm long coax.














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December 10, 2012

SKIN effect on a 5cm long coax cable (SWAN mode):















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December 6, 2012

And here a more recent paper on V-I plots for comparative analysis of TL models using SpicySWAN:https://docs.google.com/file/d/0Bx-ZqV10CSiNYlZENzdfOEk4aEk/edit

2012_PB_VI Trajectory plots for Transmission Line models evaluation.pdf - Google

Drive












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December 6, 2012

Here you can find a paper on comparative analysis of Transmission Line models using SpicySWAN:https://docs.google.com/file/d/0Bx-ZqV10CSiNS1JwTnc1NVIyTWs/edit

2012_Trasmission Line approximation using LC cells_PB_DWS.pdf - Google Drive

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December 5, 2012

Spicy Tutorial Video #3

Spicy Tutorial Video #3








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December 5, 2012

Spicy Tutorial Part 2


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December 5, 2012

How to make wires video tutorial

How to make wires video tutorial
















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December 5, 2012

NEw Copy Paste Feature Video!

NEw Copy Paste Feature Video!

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December 5, 2012

Spicy WEB Update: 12/4/12 you can now set your own part references, and there is a new log plot available! Will be on next ipad release asap Like · · Share

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December 4, 2012

Dec 4, 2012 12:19am

Another time trial of SpicySWAN vs MC10 for circuit 10_LC_CELL_TL in the window 0 - 5 microseconds with timestep of 1 picosecond (5 MILLION output samples)

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December 2, 2012

Dec 2, 2012 10:42pm

This video shows an actual comparison between a commercial simulator (MC10) and SpicySWAN during the simultaneous simulation of the same circuit 10_LC_TL. To get similar accuracy levels, both sims are carried out the same time step of 10 femtoseconds on a time window of 0-50ns. MC10 runs locally on a quad core I7 PC. SpicySWAN sim is carried out by SWAN/DWS engine running on a SpicySWAN server in the Web.

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November 30, 2012
















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If we try to simulate the 9,999 LC cell circuit with a 10 FEMTOSECOND time step , this is the comparison between TL model and LC model at line ends.

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November 29, 2012

Here a detail of simulated waveforms at the end of the 9,999 cells chain after 97ns.In yellow the exact TL model, in green the sim at 100 femtosec time step, in light blue the sim at 1 picosec time step

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November 29, 2012

Here the results of the 9,999 cell LC circuit.

















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November 29, 2012

This report is related to a SWAN sim of a 9,999 cell LC chain with a time step of 100 Femtoseconds on a time window of 100ns.
















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November 29, 2012

If we try to simulate with a commercial Spice like LT Spice the previous IDEAL lossless TLINE (50ohm,1ns) circuit stimulated by 500ps Voltage pulse, this is the result we get:

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November 28, 2012

In case of pulse input , the IV pattern of the exact SWAN model becomes a CROSS instead of a RECTANGLE. The lumped models approach the cross shape increasing the number of cascade cells as happens in the previous situation (Step input).

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November 28, 2012

To test TL models a 500ps Voltage PULSE stimulus can be chosen in place of step input previously shown.

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November 27, 2012

These are the comparative IV trajectories related to different LC cell implementation of the TL (50 ohm, 1ns).




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November 27, 2012

LC cell using a Serial Adaptor stub model of the inductor equivalent to the trapezoidal rule of integration.

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November 27, 2012

Comparative images show the the I V trajectories related to circuit LC_CHAIN_TL plotted with the same I and V scales. In yellow is highlighted the area that is perfectly rectangular in the ideal case (SWAN model of TL). For the 10 LC-cell model the waveform distortion increases increasing the time window of the analysis

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November 26, 2012












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Building up Subcircuits: (3 input LUT): http://www.ischematics.com/webspicy/share/img30860584725056315123b.png

http://www.ischematics.com/webspicy/share/img30860584725056315123b.png

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November 26, 2012

Building up Subcircuits (4 input LUT): http://www.ischematics.com/webspicy/share/img62784305673746035118b.png

http://www.ischematics.com/webspicy/share/img62784305673746035118b.png

www.ischematics.com

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November 24, 2012

http://www.youtube.com/watch?v=x5Wms1S5lmc

SWAN ART

www.youtube.com

A gallery of artistic images coming from the transient simulation of actual electrical circuits performed using the Digital Wave Simulator DWS.

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149.


November 24, 2012

Artistic version of a LC cell TL sim.









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November 24, 2012

Here the brochure showing several applications of SWAN/DWS predecessors: https://docs.google.com/file/d/0Bx-ZqV10CSiNMG9CMGEzdnZxVTQ/edit

1989_PB_SPRINT&SIGHTS_BROCHURE_FULL_web.pdf - Google Drive














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151.


November 24, 2012

Here a reference to DWN methods applied for modeling & simulation of lossy interconnections: https://docs.google.com/file/d/0Bx-ZqV10CSiNYTM3YjVjYmUtNTk1Yy00NzU3LTgyMzItMThmZmJhYTQ2NjYx/edit

1982_Simulation_lossy_interconnections_ISCAS_Rome.pdf - Google Drive

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152.


November 24, 2012

Here a paper about the applications of early DWN simulators:








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https://docs.google.com/file/d/0Bx-ZqV10CSiNZTJhYmNmZTQtNjc4OS00ZjQyLThhZjMtOTNlOTdjYWZkNTM2/edit

1985_Electrical_Simulation_Using_Digital_Wave_Networks_IASTED_Symposium_

Paris_June1985.pdf - Google.

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153.


November 24, 2012

Here a biblographic reference about the first simulation program based on DWN algorithms. https://docs.google.com/file/d/0Bx-ZqV10CSiNYzk0OTA5N2QtOWY2My00MmM0LTllNWItY2U0NzUzOTQ2OWVi/edit

1975_Use_of_equivalent_Wave_Digital_Networks..._1975.pdf - Google Drive

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https://docs.google.com/file/d/0Bx-ZqV10CSiNYzk0OTA5N2QtOWY2My00MmM0LTllNWItY2U0NzUzOTQ2OWVi/edit











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November 24, 2012

a few people have asked for a 555 timer spice model .. we found a subcircuit version online and posted it in the public models on the homepage: http://www.ischematics.com/validModels.py?MODEL=UA555 You an use it like other subcircuits, just create a subcircuit part and name the nodes in order and set the part value to UA555 .. fyi

Spicy Circuit Schematics & Simulation Capture Spice Model List © 2011,2012

iSchematics.com

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with iPad, Web - Upload your spice models

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155.


November 23, 2012

Spicy SWAN WEB & Ipad versions cooperate together.


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144

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156.


November 23, 2012

XY plot of input current versus out voltage related to previous circuit LC_CELL_TL. The time window is 10 -11 microseconds, sim tstep is 1 ps.
















145

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157.


November 23, 2012

An eye diagram of previous signals at 125 Mbit/sec enhances the aberrations affecting the lumped LC model of the TL.














146

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158.


November 23, 2012

A more detailed view (DWV mode) of voltages at the end of both TL models.















147

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159.


November 23, 2012

Here the comparative plot of the waveforms of the two TL models.














148

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160.


November 23, 2012

Here the SWAN netlist of the previous circuit: ****************************************** * Netlist and simulation file * Generated by: SPICY Schematics (ischematics.com) * File: LC_CHAIN_TL ...See More












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149


ischematics.com



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161.


November 23, 2012

This simple circuit compares a lumped parameter LC model of a Transmission Line with the native SWAN model of the TL.

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150

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162.


November 22, 2012

A simulation tool based on both algorithms (Spice/SWAN) is the most powerful and comprehensive solution available today on the market. Spicy SWAN is based on the philosophy of HYBRID simulation engines (like happens in the automotive field for car engines). Having a common data entry interface at SCHEMATIC level, the user can select what is the best engine to be utilized for his circuit. There are even situations where both engines can be utilized to get the result, as shown in some of previously shown examples... Like · · Share















151

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163.


November 22, 2012

For the previously explained reasons, Spice is well suited to deal with circuits containing device models (.model cards) where propagation delay effects are negligible. SWAN is well suited for circuits where propagation of signals cannot be ignored as happens more and more due to increasing speed of modern electronic systems.. Like · · Share

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164.


November 22, 2012

Moreover DWN algorithms work at a FIXED TIME-STEP according to sampled system theory and are NYQUIST criterion COMPLIANT while NA and related Newton_Raphson iterative loops are based on VARIABLE TIME-STEP integration methods and cannot be compliant to Nyquist criterion... Like · · Share

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165.
























152

November 22, 2012

The strong differences between classical NA and WDN algorithms simulation of electrical netwoks explaain the reason of their complemetary features. NA used in Spice doesn't take into account SIGNAL PROPAGATION EFFECTS because assumes that the circuit is dimensionless. On the contrary DWN starts assuming signal (wave) propagation and the Trasmission Line (TL) is its basic circuit component.... Like · · Share

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166.


November 22, 2012

Previous simple examples remark some of the differences between SWAN mode versus Spice mode of operation. These differences are due to completely diffferent approach to circuit simulation of the two tools. While Spice solves the network using the well known three-centuries old NA (Nodal Analysis) method, SWAN simply maps the network into a DSP (Digital Signal Processing) equivalent. This equival...See More Like · · Share

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167.


November 22, 2012

Here the multiplot result of the SWAN mode sim of the previous circuit 5RLCI_SW opening the switch 5 microseconds after the start up (DWV plot mode).




















153

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168.


November 22, 2012

A time-varyng network topology obtained abruptly disconnecting a portion of previous 5RLCI circuit b means of a time-controlled switch (SWAN mode only) ...















154

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169.


November 22, 2012

An XY trajectory of two voltages of the previous circuit (5RLCI). VOUT2_2 vs VOUT2.












155

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170.


November 22, 2012

If the previous circuit is fed by a 100mA current step source this is its simulated response in SWAN mode (Spice is not able to do this sim).
















156

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171.


November 22, 2012

Here the DWV (Digital Wave Viewer) mode multiplot view of the result of previous 5RLC sim (5K points/waveform).














157

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172.


November 22, 2012

Here the results of the sim of previous circuit 5RLC in SWAN mode on a 10microsec window, Sim tstep was set to 10ps for a total of 1MILLION out samples/waveform. This sim runs on the server in about 200msec. Spice is not able to do the job.














158

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173.


November 22, 2012

A simple but tough circuit for Spice: A LC network fed by a step generator of amplitude 1V.














159

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174.


November 21, 2012

A very simple lossless TL circuit where SWAN & Spice mode sims are compared in the 200-300ns window. The differences are small due to smoothing effects of multiple reflections on the capacitive load. Spice TL lumped model has only a small smoothing effect in this case.












160

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175.


November 21, 2012

fun with new copy/paste: 4 stage inverting amp: https://www.ischematics.com/webspicy/report.py?RCODE=32850278137275472714a













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161


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176.


November 21, 2012

SWAN netlist related to the previous simulation: ****************************************** * Netlist and simulation file * Generated by: SPICY Schematics (ischematics.com) * File: WCSEQ_RC_CHAIN_REC ****************************************** .CHAIN 30*RC_LINE I:1; O:2 R0 20030 0 50 T0 3 0 10001 0 Z0=50 TD=1n ...See More Like · · Share

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162


177.


November 21, 2012

Simulation of the trasmission of a 10Mbit/sec binary signal over the 900-cell rc line including a threshold receiver: eye diagrams at the input and output of the receiver.

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178.

















163


November 21, 2012

Simulation of the trasmission of a 10Mbit/sec binary signal over the 900-cell rc line including a threshold receiver.

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179.


November 21, 2012


















164

This is the 10Mbit/seec eye-diagram of the signal at the end of the rc line resulting from the SWAN sim of the previous experimental setup.

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180.


November 21, 2012

This is the SWAN mode circuit simulating the experimental setup where the worst-case bit sequence generator is connected at the transmitter end of the line.

















165

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181.


November 21, 2012

This is the binary sequence causing the maximum eye closure of the signal al end of the RC line at 10Mbit/sec.














166

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182.


November 20, 2012

These are the Worst Case Eye Diagrams (WCEDs) at various bit rates showing the eye diagram closure at the end of the 900-cell RC line.












167


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183.


November 20, 2012

Here a detail plot showing the rise edge of the signal at the end of the rc line (900 cells).
















168

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184.


November 20, 2012

Here the screenshot of the Spicy SWAN plot (windows 500ns, sim tstep 10ps, 50Ksamples calculated, 5K plotted).















169

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185.


November 20, 2012

And this one is the related netlist as extracted by Spicy SWAN: ****************************************** * Netlist and simulation file * Generated by: SPICY Schematics (ischematics.com) * File: RC_LINE_CMP ...See More











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170


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186.


November 20, 2012

This is the TDR (Time Domain Reflectometer) simulation set up for a rc line equivalent to 900 elementary cells (Rcell=.5 ohm, Ccell=1pF). Has been built up as a chain of 30 behavioral blocks previously extarcted from a 30-cell line.

http://www.facebook.com/l.php?u=http%3A%2F%2Fischematics.com%2F&h=vAQHQhyVAAQGcpfveUzRk_ypGghrl_h5OlNJ6U6TA-VJs2w&enc=AZMgseJc6zg5bVAns6eWKbPY4F7of3dzBbtNKUMhRRIhwElVxYpbJgoeyiPof14vjxEdy0_0rbV2_1hkVqxZ3-tH&s=1











171

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187.


November 19, 2012 near Minneapolis, MN via mobile

15 stage ring oscillator using default cmos spice models for digital inverters https://www.ischematics.com/webspicy/report.py?RCODE=03630673553762746241a Like · · Share

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https://www.facebook.com/pages/Minneapolis-Minnesota/106300959405546?ref=stream

https://www.facebook.com/mobile/?v=173847642670370

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172

188.


November 18, 2012

New Feature: Copy/Paste/Move, Group Select http://www.youtube.com/watch?v=9Ih2euzv4As Available on Spicy Web, will rollout on iPad in next update!

Spicy Schematics - Group Select, Copy/Paste Example (no audio)

www.youtube.com

Spicy Schematics - Group Select, Copy/Paste Example (no audio)

http://ischematics.com https://www.facebook.com/SpicySchematics

http://groups.google.com/group...

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189.


November 17, 2012

This a recent real world application of BTM to 20Ghz probes characterized with the TDR.



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173

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190.


November 17, 2012

The previous technique has been applied for decades to state-of-the-art digital system development with great success. Like · · Share

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174

191.


November 17, 2012

BTM models can be easily extracted from TDR measures of actual prototypes, and SWAN models cane be easily built up for accurate simulations of complex circuitry up to Multigigahertz frequencies. Like · · Share

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192.


November 17, 2012

The previously example shows how the BTM (BEHAVIORAL TME MODELLING) technique can be applied to circuits. Spice can't support this very powerful technique, due mainly to numerical stabilty issue of NA. Like · · Share

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193.


November 17, 2012

This is the SWAN netlist related to the previous circuit: ****************************************** * Netlist and simulation file * Generated by: SPICY Schematics (ischematics.com)



















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175

* File: RC_LINE_CMP ...See More


ischematics.com



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194.


November 17, 2012

...and in this plot the responses of the 2 previous models are compared together.

http://www.facebook.com/l.php?u=http%3A%2F%2Fischematics.com%2F&h=OAQGWOQUnAQFyEwo0abEuDvgg5kmS8w9aiea9IjzMj8Tr4Q&enc=AZMjGIukg_FC-qWxSg5F22E1fueAE08Fou74d0b-xOlGLSxtnpm55lFWZ91Zl9ZJU9RlXUMwGEP5kc48ejirl81b&s=1

















176

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195.


November 17, 2012

Spicy SWAN schematic of the setup built up to compare the circuital model to the behavioral model of the RC LINE. TDR is used to characterize both models.















177

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196.


November 17, 2012

Example of PWL breakpoints extraction from S21.














178

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197.


November 17, 2012

Here the simulated time domain Sparameters of the RC LINE. Due to symmetrical and reciprocal circuit only 2 parameters are enough to describe full behavior.














179

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198.


November 17, 2012

This schematic shows a TDR set up to measure the 2-port S-parameters of the 30-cell RC line in time domain.















180

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199.


November 17, 2012

File sync just got better .. the screenshot below shows the new interface .. instead of always transferring all files, you can now upload/download one file at a time! The manual sync option is still there so if you need to you can sync all...See More













181

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200.


November 17, 2012

Spicy Design Report example: https://www.ischematics.com/webspicy/report.py?RCODE=55643760483734230622a












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https://www.ischematics.com/webspicy/report.py?RCODE=55643760483734230622a


182


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201.


November 16, 2012

1Gbit/sec eye diagrams of 30-cell vs 20-cell RC_LINE at 1Gbit/sec.

https://www.ischematics.com/webspicy/report.py?RCODE=55643760483734230622a











183

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202.


November 16, 2012

30-cell vs 20-cell RC_LINE at 1Gbit/sec.














184

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203.


November 15, 2012

Other 10Gbps eye diagrams coming from the previous real design application (SWAN).















185

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204.


November 15, 2012

This is another eye diagram display coming from a Piero recent design application : 10Gbps signals on a CML (Current Mode Logic) pcb net under Fault Insertion trials (HiSAFE+ project, Cisco Systems)














186

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205.


November 15, 2012

...and here the eye diagrams at 1 Gigabit/sec related to previous circuit PSEQ_RC_LINE.















187

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206.


November 15, 2012

Here the netlist of previous circuit: ****************************************** * Netlist and simulation file * Generated by: SPICY Schematics (ischematics.com) * File: PSEQ_RC_LINE ...See More












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188


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207.


November 15, 2012

Yet other unique capabities of SWAN mode: CHAIN of cells and BINARY sequences.

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208.


November 14, 2012

All this talk about Spicy SWAN, what is it? Spicy SWAN is a new Professional version of Spicy with hybrid simulation engine that uses Spice, and SWAN simulators ... What is SWAN? Our October Newsletter has a great introduction: http://ww...See More










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190

Spicy Schematics & Circuit Simulation - News © 2011,2012 iSchematics.com

www.ischematics.com


with iPad, Web - Spicy News

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209.


November 14, 2012

..,and what happens to the voltage in the node between the inductors?

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191

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210.


November 14, 2012

...and this one is the SWAN mode netlist related to previous ckt FLUXCONSERV2 * Netlist and simulation file * Generated by: SPICY Schematics (ischematics.com) * File: FLUXCONSERV2 * by Piero Belforte ****************************************** L0 0 4 1m IC=1A L1 5 0 1m














192

V0 4 6 DC(0) ...See More Like · · Share

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211.


November 14, 2012

Yet another very simple circuit showing the flux conservation of inductor's model in SWAN mode.

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193


212.


November 14, 2012

And this one is the SWAN netlist of CHARGE_COSERV circuit generated by Spicy SWAN Netlist and simulation file * Generated by: SPICY Schematics (ischematics.com) * File: CHARGECONSERV * by Piero Belforte ****************************************** C0 3 0 1u IC=10V C1 2 0 1u C2 1 0 2u ...See More Like · · Share

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213.


November 14, 2012

This simple circuit shows how the capacitor's charge is conserved in SWAN mode. This is a very important feature to guarantee the accuracy of the simulation.















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214.


November 13, 2012

Despite being born to model and simulate mainly propagation effects, DWN can outperform NA even for concentrated parameters circuits. Here a simple LC resonat circuit that is difficult to solve using Spice...













195

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215.


November 13, 2012

Another comparison Spice/SWAN for a very simple circuit with Transmission Lines.















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216.


November 13, 2012

Behind Spicy SWAN there is a long history of developments and successful applications to state-of-the art projects.














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217.


November 11, 2012

Here you cab find a document I wrote about the TL approximations of Spice studied using SWAN:https://docs.google.com/file/d/0Bx-ZqV10CSiNS1JwTnc1NVIyTWs/edit

2012_Trasmission Line approximation using LC cells_PB_DWS.pdf - Google Drive

docs.google.com












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198

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218.


November 10, 2012

A multiplot of results of ckt TLRING2 (SWAN mode)

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199


219.


November 10, 2012

Another case where Spice is unable to do the job.

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220.

















200


November 10, 2012

In this case, with an impedance Z0 of 300 ohm (or more), Spice is unable to run the simulation (Gmin stepping error). SWAN mode can do the job without problems (tstep 10femtoseconds).

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221.


November 10, 2012



















201

Another comparison of SWAN mode vs Spice mode for a TL ring oscillator that Piero has just built up.

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222.


November 10, 2012

In this collage the differences are clearly visible.















202

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223.


November 10, 2012

...and this one in SWAN mode.















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224.


November 10, 2012

This is the result in Spice mode.














204

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225.


November 10, 2012

This simple oscillator is made by Piero with a precharged Transmission Line shorted at one end and left open at the other end. Can be simulated both is Spice mode and SWAN mode using Spicy SWAN. Let's see the difference of the results.














205

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226.


November 10, 2012

Yet another XY plot of circuit coupl_osc .














206

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227.


November 10, 2012

Another view of the previous variables.














207

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228.


November 10, 2012

This is not an ECG.















208

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229.


November 9, 2012

And this is the first plot on the Spicy SWAN plt tab















209

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230.


November 9, 2012

SWAN netlist related to circuit coupl_osc: ****************************************** * Netlist and simulation file * Generated by: SPICY Schematics (ischematics.com) * File: coupl_osc ****************************************** C0 6 0 1n IC=1V L0 6 0 1u














210

C1 4 0 .3333n IC=-1V ...See More Like · · Share

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231.


November 9, 2012

A new very simple circuit: Two LC oscillators fed by negative resistances tu sustain the oscillations are coupled together by a non linear resistance.

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211


232.


November 9, 2012

A new very simple circuit: Two LC oscillators fed by negative resistances tu sustain the oscillations are coupled together by a non linear resistance.

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233.



















212

November 8, 2012

XY PLOTS OF CHUA7

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234.


November 8, 2012

CHUA7 (BUTTERFLY) SCHEMATIC


















213

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235.


November 8, 2012

And this one is an artistic view of Piero related to circuit CHUA7.















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236.


November 8, 2012

An XY multiplot related to circuit CHUA7.















215

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237.


November 8, 2012

And this is the time-domain multiplot related to circuit CHUA7.














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238.


November 8, 2012

Another little variation on CHUA's theme.
















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239.


November 8, 2012

Time domain behavior of CHUA5.
















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240.


November 8, 2012

This is what happens with a small change of capacitor C0 params (value,IC). Ref. Spicy SWAN circuit CHUA5. Report just posted.














219

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241.


November 7, 2012

A more complete set of XY trajectories related to the previous CHUA circuit.
















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242.


November 7, 2012

CHUA3 circuit schematic built up using Spicy SWAN.
















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243.


November 7, 2012

CHUA VI trajectories.















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244.


November 7, 2012

Using Spicy SWAN on Ipad2.















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245.


November 7, 2012

ROLLER COASTER from the Swan mode ckt just uploaded.














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246.


November 6, 2012

a user asked about spice models for vacuum tubes ... i remember another user asked a few months ago as well .. although this is not our site and only something i found from a google search, it may be useful for some looking to do amplifier circuit simulations with vacuum tubes:http://tdsl.duncanamps.com/dcigna/tubes/spice/index.html

Spice Models












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http://tdsl.duncanamps.com/dcigna/tubes/spice/index.html


225

tdsl.duncanamps.com

general model for the heater of indirectly heated

tubes5AR45U4GB5V3A5V4GA5Y3GT6DJ86SL7GT6SN7GTB12AT712AU712AX712BH7

A6L6GC6V6GTAKT-88GL211WE300B

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