Well... I'm working on a circuit for a member on the Forums, and am already getting stuck...
I've built a portion of : http://makezineblog.files.wordpress.com/2010/10/ledcolororgan-schem_r1.gif
I am measuring the signal along the portion of the light organ that I built and the OPamps are not behaving like I had assumed...
I feed a 600mV Audio signal in, and I only get a 6nV signal out from U2... The resulting signal at the final output is many many magnitudes smaller than the input.
Any ideas on what I am missing?
I've built a portion of : http://makezineblog.files.wordpress.com/2010/10/ledcolororgan-schem_r1.gif
I am measuring the signal along the portion of the light organ that I built and the OPamps are not behaving like I had assumed...
I feed a 600mV Audio signal in, and I only get a 6nV signal out from U2... The resulting signal at the final output is many many magnitudes smaller than the input.
Any ideas on what I am missing?