This two-transistor regenerative switch works as an excellent trigger for SCRs and other devices that need sharp pulses. The circuit is from an old documentation.
Found in documentation from the 1980s, this circuit can have several adaptations to use modern...
This receiver for listening to the TR-23 phone was manufactured in Japan in the 1960s. The circuit is...
The frequency of the tone produced by this oscillator depends on the amount of light falling onto...