Three-phase power supply (CB23680E)

This circuit was found in Radio Electronics magazine from July 1960. The components used are transistors of the time.

Continuity tester (CB9325E)
Found in an Electronic Design from the 90s, this sophisticated continuity tester uses operational...
Micro Voltage Regulator (MSB003E)
The circuit in the Multisim Blue simulation sources a regulated voltage to loads up to 50 mA. The...
Light activated alarm (CB7867E)
Found in American documentation, this simple circuit activates a buzzer with embedded oscillator. A...