Posted: 1/30/2006 9:21:26 AM

Joined: 11/29/2005

Does anyone have a circuit of a simple R-C / inverter oscillator circuit that I can use to create a square wave for my theremin.

I had a circuit using inverters & an inductor but I practically had to touch the antenna to get any change in the oscillator frequency.

Posted: 1/31/2006 10:44:56 AM

Joined: 11/29/2005

What frequency range do you typically want your output signal to be?
Posted: 2/1/2006 8:03:18 AM

From: Sammamish, Washington

Joined: 2/13/2005

Would a simple 555 IC chip suffice? You could stick a low-pass filter the output of your heterodyning circuit to get a control voltage for regulating the frequency of the 555.

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