Re: Rate led tremolo

Posted by Travis on Jun 08, 2021; 3:07am
URL: http://guitar-fx-layouts.238.s1.nabble.com/Rate-led-tremolo-tp50049p50050.html

Good question.

Remember that with your 3PDT only two poles are needed for mechanical true bypass. The normal layout we use here links the “LED pole” common to ground but you don’t necessarily need to do that.

You can connect whatever you want to the common of the LED pole as long as you don’t wrongly connect it to another part of the switch/circuit

In so many words, I would connect the LED anode to 3PDT lug 1. Then the resistor from 9V to 3PDT lug 2.

Lug 3 of the 3PDT doesn’t need to be connected to anything. The main point of the “LED pole” is to switch the LED, so having no connection in the off mode is not a problem

This is assuming the 3PDT is numbered like this

147
258
369