Author Topic: Converting this schematic for a true-bypass DPDT switch (EA Tremolo)  (Read 4052 times)

Pancra85

I couldn't get a 3PDT switch on my area, so as I read that you can have true bypass with a DPDT as well but without a led, I bought one.

I have completed the PCB and soldered everything but this is my first pedal and I haven't got a lot of confidence I would like you to please help me in converting the schematic for a DPDT.
Schematic: http://www.generalguitargadgets.com/pdf/ggg_eat_sc_improved.pdf?phpMyAdmin=4a28f86a515b7883e7bc35a68d4e7b6d&phpMyAdmin=78482479fd7e7fc3768044a841b3e85a
Connections: http://www.generalguitargadgets.com/pdf/ggg_eat_lo.pdf?phpMyAdmin=4a28f86a515b7883e7bc35a68d4e7b6d&phpMyAdmin=78482479fd7e7fc3768044a841b3e85a

I know I have to remove the "led indicator" branch and so also remove the "Sw1c" part of the switch, but what do I do with the "Sw1a" part?

Maybe I should follow the method indicated here: http://www.muzique.com/lab/true1.gif
and so make "EFFECT IN" as the node that goes to C8 and R1
"EFFECT OUT" as the middle leg of the Volume potentiometer
and ignore the connections on the pdf

Help?
Thanks!

Pancra85

Re: Converting this schematic for a true-bypass DPDT switch (EA Tremolo)
« Reply #1 on: December 05, 2012, 03:04:41 PM »
Ok, sorry for asking before searching.
I found this topic: http://www.diystompboxes.com/smfforum/index.php?topic=98367.0
and it says that I simply need to ignore the middle contact on the 3PDT and the led.

Would that work here?