This simple power supply, which is equivalent to 2 AAA or AA batteries, was found in an Elektor from the 90's. The transformer has a 4.5 V secondary with a current of 50 mA or more.
Found in documentation from the 1980s, this converter or inverter circuit uses components from...
Found in a 70’s documentation, this circuit can operate with signals up to 10 MHz. The operational...
Indicated as a joke or challenge this circuit shows how it is possible to control two lamps using...