The signal from this circuit found in a 1968 Electronics World is sinusoidal and depends on the capacitors. These components can have values from 330 pF to 100 nF. The signal must be applied to an amplifier.

The signal from this circuit found in a 1968 Electronics World is sinusoidal and depends on the capacitors. These components can have values from 330 pF to 100 nF. The signal must be applied to an amplifier.