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.
Wednesday, October 19, 2016
Valve Wizard Small Time
Here's Valve Wizard's take on the PT2399 delay. It's very similar to most PT2399 delays out there, with a dual op-amp providing input and output buffering. This was designed with the tails function and it uses Valve Wizard's usual J112 switching. Here's his original schematic and explanation of the circuit. You can also use a DPDT footswitch for bypassing, using one side to turn the delay on/off and the other for LED indication. I've included 2 extra pads on the PCB layout for this function. If going this route, don't populate the J112 along with the 1N4148 diode, 1k and 4.7k resistors, and 10µ capacitor round the J112.