This circuit is from a 1968 documentation. It generates a non-symmetrical signal with the waveform shown next to the diagram. Transistors are of the time, but modern equivalents can be used.
Depending on the transformer used, the power of this inverter can reach 300 W. This is a critical...
This circuit activates a warning lamp when an incoming call is received. We found it in an 80s...
This TTL circuit can be used as a shield. The frequency can be changed by changing the capacitors. ...