PROTEUS: A SIMULATION PROGRAM

Ertuğrul Eriş2011

WHAT IS PROTEUS?

• CIRCUIT ANALYSIS: Fınd the elements(components) currents and voltages for a given circuıt – LAB– MODELLING (THEORY;MATHEMATICAL SOLUTIONS)– SIMULATION «PROTEUS»

• INTERACTIVE (STEP BY STEP)• GRAPH BASED (WAVWFORMS)• Analog circuits: ITEC, CA, Electroic I, II, control theory, • Digital circuit: Logic Design, Microprocessors

WHAT IS PROTEUS? Purpose: CIRCUIT ANALYSIS

Input(s)Sources

Output(s)• calculations

• measurements

CIRCUIT

ELEMENTS(COMPONENTS)

TOPOLOGY

Generator Parts/Simulator

primitives Instruments/Signal generator

• PartsAnalog/digital• Wire autorouter

• Instruments• Current probe• Voltage probe

TOOL: P R O T E U S

ELEMENTS VS COMPONENTS

• ELEMENTS– THEORY/IDEAL– PROTEUS/MODELLING PRIMITIVES (WE USE IN

LAB)• COMPONENTS– LAB/PRACTICALLY EMPLOYED IN LAB– BUY IN SELANIK PASAJI/KARAKÖY– CAN BE MODELLED BY AN/(A FEW) IDEAL

ELEMENT(S) (WILL BE TAUGHT IN CLASS)

PROTEUS – START UP SCREEN

DRAWING AREAAll parts should be placed in this area

Zoom Adjust Buttons+ Mouse Scroll

MOSTLY USED ITEMS

Mode Group 1:Parts (Elements, components):

Modelling primitives «will be used»Topology: wire autorouter «will be used»

Source primitivesMode Group 2: Graph simulatıon(Waveforms) «THIS SIMULATION WILL BE USED»Generators (AC/DC) OR Parts/sımulation primitives «will be used»V-voltage probe «will be used»I-current probe «will be used»Instruments (AC/DC voltmeter/Ammeter; Ossiloscope)

Mode Group 3: Drawing Shapes, Text Input

Mode Group 4: Component Rotation «will be used»

Interactive Simulation

ADDING “PARTS”

Which part ???

Select: COMPONENT MODE

Select: P (Pick Devices)

ADDING “PARTS”

Discover!!! Let’s select “Resistors” from “Category”

Category

Sub-Category

Manufacturer

ADDING “PARTS”Click parts in mode

area

Click «P» in mode area

click «Modelling Primitives»

İn «Category»

click«Analog(SPICE)»İn «Subcategory»

Select «Resistor»Then«OK»

ADDING “PARTS”

Right click on the resistor,Select «edit properties»

Place «resistor» on the drawing area

ADDING “PARTS”

Reference Value: This is assigned automatically

Component Value: Editable

SOURCE SELECTION

• PARTS– SOURCE PRIMITIVES• DC (IDEAL BATTERY)• AC (IDEAL VOLTAGE SOURCE AT HOMES)

ADDING VOLTAGE SOURCEDobble click

«Parts»

Cick «simulator primitives»

Select «Vsource»

then«OK»

Place Vsource in drawing area

ADDING VOLTAGE SOURCE

Right click on V source, select «edit properties»

Then «OK»

TOPOLOGY

• ELEMENTS CONNECTION– WIRE OUTOROUTING– GROUND PLACEMENT (TERMINALS/GROUND)

TOPOLOGY: WIRE CONNECTION

Connect the component terminal sas required by topology

click on the wire autorouter,

ADDING GROUND• TERMINALS/GROUND• EVERY CIRCUIT MUST HAVE ONE!!

click«Terminals»

select«Ground»

Place«Ground»İn drawing

area Complete wire connection for

ground

OUTPUTS

• OUTPUTS• COULD BE VOLTAGE/CURRENT OF ANY

ELEMENT IN THE CIRCUIT• MEASUREMENT IN PROTEUS: MOSTLY

VOLTAGE/CURRENT PROBES– Current probe should be on horizontal wire, not

on the vertical wire!!

MEASUREMENT: VPROBE/IPROBE

Voltage probe

Current probe

SIMULATION

• TWO SIMULATION– INTERACTIVE• Mostly used for digital signals

– GRAPH BASED SIMULATION (WAVEFORMS)• Mostly used for analog signals• Graph mode/Analog

– Probe selection– Left/right y-axis selection for probe measurements– Min/max value borders

GRAPH SIMULATION

Clic «graph mode»

select «analogue»

place graph window on drawing area

«Analogue prospice» window will be seen

GRAPH SIMULATION

• s«Edit Transient Graph»• Start/stop time

«Add Transient Trace»• Allready placed

probe waveforms are chosen

• Different (left/right) y-axis scale could

be selected

«Simulation Run»

COMPONENTS’ VOLTAGE MEASUREMENT

• Voltage probe measures the node voltage where it is placed.

• In order to find an element votage, the therminal node-voltages of the element should be substructed.

• This operation could be done

A COMPONENT/ELEMENT’S VOLTAGE MEASUREMENT

Name the component

Select R1(a) probe

Select R1(b) probe

Change + sign with (-)

Click OK

Run simulation