The two integrated circuits used in this configuration can still be found. The frequencies of the effects are determined by the capacitors, which may have their values changed.
With this circuit it is possible to use a DC buzzer (not a transducer) as an extension of the...
This circuit allows feeding a small semiconductor laser to obtain a useful resource for...
This circuit comes from a Gernsback Publications of the 90s. The circuit uses a general-purpose transistor as...