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Dustbunny

FX TYPE: Fuzz

Based on the Tonebender™

Enclosure Size: 1590A
“Softie” compatibility: none

© 

2020 

madbeanpedals

Overview

The DustBunny is a simple, negative ground silicon Tonebender fuzz fitted for a 1590A enclosure.

Controls

•  FUZZ: 

Fuzz from min to max.

•  VOL: 

Output

Terms of Use: 

You are free to use purchased 

Dustbunny 

circuit boards for both DIY and small commercial operations. You may not 

offer 

Dustbunny

 PCBs for resale or as part of a “kit” in a commercial fashion. Peer to peer re-sale is fine, though.

Technical assistance

 for your build(s) is available via the 

madbeanpedals forum

. Please go there rather than emailing me for 

assistance on builds

. This is because (1) I’m not always available to respond via email in a timely and continuous manner, and (2) 

posting technical problems and solutions in the forum creates a record from which other members may benefit.

Summary of Contents for Dustbunny

Page 1: ...rds for both DIY and small commercial operations You may not offer Dustbunny PCBs for resale or as part of a kit in a commercial fashion Peer to peer re sale is fine though Technical assistance for your build s is available via the madbeanpedals forum Please go there rather than emailing me for assistance on builds This is because 1 I m not always available to respond via email in a timely and con...

Page 2: ...Parts Dustbunny madbeanpedals ...

Page 3: ...Values Dustbunny madbeanpedals ...

Page 4: ...Traces Dustbunny madbeanpedals ...

Page 5: ...esistors Caps Diodes R1 1M C1 10n D1 1N4001 R2 470k C2 4u7 Transistors R3 100k C3 100n Q1 Q3 NPN Si R4 2k7 C4 47pF Trimmer R5 10k C5 4u7 BIAS 25k R6 100k C6 10n Pots R7 100k C7 47uF FUZZ 1kC R8 470R C8 100n VOL 100kA R9 100R R10 4k7 ...

Page 6: ...rbon Film 1 4W 10k 1 Metal Carbon Film 1 4W 100k 3 Metal Carbon Film 1 4W 470k 1 Metal Carbon Film 1 4W 1M 1 Metal Carbon Film 1 4W 47pF 1 Ceramic MLCC 16v min 10n 2 Film 16v min 100n 2 Film 16v min 4u7 2 Electrolytic 16v min 47uF 1 Electrolytic 16v min 1N4001 1 Si 3 NPN low hFE 25k 1 Bourns 3362p 1kC 1 PCB Mount Metal Shaft 9mm 100kA 1 PCB Mount Metal Shaft 9mm ...

Page 7: ...GLcD7vRb QqL9uMLMqIpepdvyyRc 3D Bourns 3362p 20k https www taydaelectronics com potentiometer variable resistors cermet potentiometers 3362p 20k ohm trimmer potentiometer cermet 1 turn 3362p html Thinline DC Jack http smallbear electronics mybigcommerce com dc power jack all plastic unswitched 2 1 mm Enclosed Mono http smallbear electronics mybigcommerce com 1 4 in mono enclosed jack http smallbea...

Page 8: ... to be a good start without removing too much high frequency I ve used 100n for C6 in previous Tonebender builders It will add a little more bass In this build I stuck with 10n and liked the balance just fine Set the bias of the Q3 collector using your multimeter by turning the trimmer until you read about 4 5v on the TP test point pad MODS This version can get very compressed at the highest fuzz ...

Page 9: ...Wiring Diagram Dustbunny madbeanpedals ...

Page 10: ...tches and pots you use madbeanpedals This template will work for either mono enclosed jacks or the Lumberg style It uses the Thinline style DC Jack It also shows the 3PDT02 bypass PCB but this is not required If you are wiring straight to a 3PDT you can use the same LED location on the right side or choose a different spot ...

Page 11: ...Voltages Dustbunny madbeanpedals 9 42vDC One Spot Current Draw 2mA Q1 DC Q2 DC Q3 DC C 7 3 C 1 3 C 4 6 B 1 04 B 0 57 B 1 35 E 0 52 E 0 E 0 72 ...

Page 12: ...Build Pic Dustbunny madbeanpedals ...

Page 13: ...Schematic Dustbunny madbeanpedals ...

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