Current controlled oscillator based off good ole' Hal Chamberlain's book. To start the oscillator, you have to flip the SPST switch on in the middle of the schematic, otherwise everycircuit will complain. To change the frequency, adjust the constant current sink at the bottom left (10-900uAmps). In real life, you would replace it with an exponential current sink (also found in Hal's book) to get 1V/Oct. Cheers!
