This circuit was obtained in an old Elektor and can be adapted to use white power LEDs. The transistor must be equipped with a heat sink. The circuit has a battery charger.
In the figure we have the circuit of a sweep generator obtained in an old publication. The central...
This circuit that uses only transistors indicates when the voltage in the circuit has the voltage...
This 8-bit converter was found in an American 1980s documentation. Motorola components are...