FM SIGNAL GENERATOR OR WOBBULATOR

Posted on Feb 4, 2014

With sine-wave input, RCA CA3046 transistor array connected as VCO can be used as low-distortion FM signal generator. With sawtooth input, same arrangement serves as wobbulator. Increasing size of timing capacitor reduces op-erating frequency, permitting use down to audio frequencies as voltage-controlled oscillator in electronic organ. -J. L. Lins

Click here to download the full size of the above Circuit.

ley Hood, Linear Voltage Controlled Oscillator, Wireless World, Nov, 1973, p 567-569.

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