This is one of many configurations of this type that can be found on our website. The circuit uses two inverters and has the frequency determined by capacitor C1.
This circuit activates a piezoelectric buzzer with an oscillator at the end of the programmed...
In this 1970s receiver, the coil has a primary with 100 turns and a secondary with 20 turns, both...
Found in old American documentation, this circuit is intended for the control of heating elements. The...