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ThunderPuss (AMZ MOSFET Boost)

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jojo amz

Text of ThunderPuss (AMZ MOSFET Boost)

  • Thunderpuss 11.2011madbeanpedals

    PCBDimensions:0.9Wx1.23H

    R1 10M C1 1n D1 9.1vZenerR2 2k7 C2 47pF D2 1N4001R3 2k7 C3 100uFR4 62k C4 100n Q1 BS170R5 100k C5 47uF

    C6 10uF GAIN 5kCPots

    Resistors Caps Diodes

    Transistor

  • WhatIsIt?

    TheThunderPussisbasedonaclassicDIYboostprojectcreatedbyJackOrman.Itfeaturesahighinputimpedance,lowoutputimpedanceandabout35dBofgain.Itofferstremendouscleanboostwithlittlecolorationandistheperfecttoolfordrivingthefrontendofatubeamp.

    Controls

    GainControlstheamountofboostproducedbythecircuit.Atfullycounterclockwise,therewillbeaslightboostofabout3dB.Atfullyclockwiseyoushouldobtainaround35dBofgain.

    Notes

    Thisisaveryeasyprojecttobuildandisagoodoneforbeginners. Itworksgreatonitsown,butcanalsobeplacedbeforeoverdrivesforaddedsaturation,orafterothereffectswhosesignalyouwanttoboost.

    Notethatitisverycommontogetsomepopwhenengagingthebypassswitchwiththisdesign.Thehighinputimpedanceandgaincontributetomagnifyinganycurrentdischargesattheinputofthecircuit.Usethewiringdiagrambelowwhichgroundstheinputofthecircuitwheninbypass.Thismayeliminatetheproblemcompletely.

    TIP:Ifyoustillhavesomepopevenwiththegroundedinputwiringyoucandischargetheexcesscurrentafterpoweringupthepedalbytogglingthebypassswitchonandoffseveraltimesinarow.Dothisbeforeturningyourampuptofullvolume.

    Youcanusea16mmshortpinPCBmountedpotunderneaththePCBtoeliminatesomewiring.5kC(reverseaudio)taperisidealsinceitallowsmorefiniteadjustmentstothegainlevelsinthesecondhalfofthepotsrotation.Ifyoucannotgetareverseaudiopot,alinearpotwillalsowork.

    Links

    JackOrmanspageabouttheMosfetBoost:http://www.muzique.com/schem/mosfet.htm

    MygoofyarticleabouttheMosfetBoostbeingoneofmyfirstbuilds:http://www.madbeanpedals.com/builds/reports/mosfet/index.html

    http://www.muzique.com/schem/mosfet.htmhttp://www.madbeanpedals.com/builds/reports/mosfet/index.html

  • Wiring

  • DrillTemplate1590B

    [email protected]

  • DrillTemplate1590A

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    Thistemplateisuntested.Pleasecheckcarefullybeforedrilling.AdjustmentsmaybeneededinPCBplacement.A9mmAlphapotwillbemucheasiertofitthana16mmPCBmountedpot.AnexternalDCjackisalsoagoodchoice.Bothareavailableatsmallbear.

    Licensing

    TheusermayutilizeapurchasedThunderPussPCBfrommadbeanpedalsoraselfmade(etched)PCBforDIY/noncommercialpurposes.YoumaynotusetheartworktosellyourownversionofthePCBdesignoraspartofakitorsimilarcommercialproduct.

    www.madbeanpedals.comBUILD.SHARE.LEARN

    http://www.madbeanpedals.com/

  • SingleSidedetchinglayout

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    NotethesinglesidedlayoutletsyouuseaxialorradialcapsforC1andC4.R6isanonboardcurrentlimitingresistorfortheLEDconnections,