Hello folks,
Im trying to make LED envelope indicator circuits to use as vactrols in my SK5. I want one LED that is bright then dips when the note sounds and one that is dark then illuminates (repeated 4 times for the 4 envelopes of the polyphony) . This is so I can modulate the other effects I have added with the envelope signal via vactrols.
I made a couple of crumby circuits botching together schematics off of the internet with NPN and PNP transistors however they seem to have stopped working and im flummoxed. Has anyone seen a circuit that would do this?
Thanks!
This is a work around I have come up with. It works quite nicely, I was just curious if it is bad sick and wrong to use an LDR to short across the LEDs? Will the LDR die after a short amount of use?
(http://mpanimation.blogspot.co.uk/2013/10/env-inv-env-led-vactrol-thingy.html)
http://mpanimation.blogspot.co.uk/2013/10/env-inv-env-led-vactrol-thingy.html (http://mpanimation.blogspot.co.uk/2013/10/env-inv-env-led-vactrol-thingy.html)