We found this circuit in a Radio Electronics from April 1965. The components are from the time and the power supply is for 12 V cars. The transistor must be equipped with a good heat radiator.
This circuit for 12 V x 2.2 W lamps was found in a documentation from the 70's. The circuit uses...
This voltage inverter allows you to raise the voltage of a battery to values as high as 140 V...
Using the 709 integrated circuit, one of the first operational, this circuit was found in the...