This TTL circuit uses LED indicators and must be powered by a voltage of 5 V. The capacitor determines the speed of the draw. We found it in documentation from the 90s.
This single transistor radio without a power supply was found in documentation from the 1960s. The...
With this circuit it is possible to control a current of several amps, depending on Q1, from a low...
This small low current inverter operates at 20 kHz frequency. We found it in documentation from...