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Vintage Synth Repair

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Thread

Simple oscillator circuit

Simple oscillator circuit

2001-07-09 by Dharma Bummer

Does anybody know where to find a simple sine or
square wave oscillator that runs off a negative power
supply (-15 VDC, to be exact) and hence produces a
negative wave (i.e., power fluctuating between 0 and
-15 VDC)?  I have a good square wave schematic
utilizing a 741 op-amp, but I can't figure out for the
life of me how to make it run off negative voltage and
produce the negative square wave that I need for the
project I'm working on...

BaM

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