This is a library of perfboard and single-sided PCB effect layouts for guitar and bass. I'm not an electrical engineer by any stretch of the imagination, just a DIY'er who likes drawing layouts. It is meant for the hobbyist (so commercial use of any of these layout is not allowed without permission) and as a way to give back to the online DIY community.

Friday, October 2, 2015

Red Fuzz

For #fuzzfriday, here's the Red Fuzz, designed by Robin Tomtlund. It's made up of 2 stages: the first is based around a single op amp with LEDs is the feedback loop creating clipping. The second is a simple FET-based boost/buffer. Much like a RAT, but with different clipping. The schematic and some sound samples can be found on the General Guitar Gadgets page. On the PCB, I added 2 pads that can be used to add a clipping switch. Just use a DPDT with the LEDs on one side and 1N4148s or whatever your preference is on the other (see the diagram below).

1 comment:

  1. Welcome.
    You must correct the error on the PCB as soon as possible. From the 2 LF351 pin, the 1k8 resistor is to be connected in series with 220nF. And this one just connected to the mass. 1k8 can not be in parallel with 220nF to ground. In this situation, the Intensity potentiometer does not react.