Hey all. I recently built the Beavis Killswitch and, although it was good, the popping noise was a drag. I experimented with pulldown resistors of different values and even a cap to ground, but no dice. Then I had an idea, and, after a few minutes messing around came up with the design below. Tested and works a charm. Thought someone else might find it useful.
(http://i1276.photobucket.com/albums/y466/BishopVogue/No%20Pop%20Kill%20Switch_zpsehwekema.gif)
(The LED and LED should be isolated in an optocoupler. Don't forget 2K2 resistor b/t LED & 9v)
Nice idea and drawing, thanks for sharing.
Great idea!
Thanks!
Knew I was forgetting something... you'll also need a 2K2 resistor (or similar) between the LED and 9v. Probably goes without saying...
(I added a note to the original post)
Wouldnt it be better to use the LDR with a resistor in a voltage divider configuration to pull the signal down instead of just in series?
Quote from: Brisance on July 13, 2015, 03:56:10 AM
Wouldnt it be better to use the LDR with a resistor in a voltage divider configuration to pull the signal down instead of just in series?
You could put a 1M shunt resistor across the output jack but there really isn't any need for it. The LDR will use the input impedance of the following circuit as a shunt resistance and function pretty much the same way with one less part. IMO, YMMV et al...
OP - have you tried it with a buffered pedal before it?