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Mad Bean Pedals Green Bean Quick Start Manual

Fx type: overdrive, based on the ibanez tube screamer
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Green Bean
FX Type: Overdrive
Based on the Ibanez® Tube Screamer™
© madbeanpedals
2015 version
1.95" W x 1.95" H
Terms of Use: You are free to use purchased Green Bean circuit boards for both DIY
and small commercial operations. You may not offer Green Bean boards for resale or as
part of a "kit" in a commercial fashion. Peer to peer re-sale is, of course, okay
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Summary of Contents for Mad Bean Pedals Green Bean

  • Page 1 2015 version 1.95" W x 1.95" H Terms of Use: You are free to use purchased Green Bean circuit boards for both DIY and small commercial operations. You may not offer Green Bean boards for resale or as part of a “kit” in a commercial fashion. Peer to peer re-sale is, of course, okay...
  • Page 2 "madbean" version Resistors Caps Diodes D1 - D3 1n914 D4, D5 your choice 470k 100pF 1N5817 120n JRC4558 220n Transistors 220n Q1, Q2 Switches 100n On/On 220R AS/SYM On/On 100uF Pots 100n TONE 20kW 470k 47uF DRIVE 500kA 100kA 100R Stock Version Resistors Caps...
  • Page 3 Shopping List (madbean version) Value Type Rating Metal / Carbon Film 1/4W 100R Metal / Carbon Film 1/4W 220R Metal / Carbon Film 1/4W Metal / Carbon Film 1/4W Metal / Carbon Film 1/4W Metal / Carbon Film 1/4W Metal / Carbon Film 1/4W 470k Metal / Carbon Film...
  • Page 5 1590B Drill Guide 4.44" W x 6.46" H...

  • Page 6: Wiring Guide

    Wiring Guide Pots, switches and indicator LED are soldered directly to the PCB.
  • Page 7 Vintage TS units can fetch several hundred dollars on the used market while new units remain cheap and plentiful. The Green Bean is based on the vintage unit, known as the 808, however it incorporates several mods to increase its flexibility and tonal range.
  • Page 8 ________________________________________________________________________________________ You can run the Green Bean at 15 or 18v provided you use caps and an IC rated accordingly. Rail to Rail op- amps typically have a lower max voltage threshold. IOW: look at the datasheet and use the appropriate voltage.
  • Page 9 Hey you liar! You said you use 100kA for VOL! True, but I was also out of them when I did this verification build. The blue LED's I picked kinda suck so I will be changing those, too. It was worth a try.