This circuit was found in an American documentation from the 80's. The components are from that time. It provides a variable output of 18 to 30 V with a current of 200 mA.
Found in ancient documentation, this circuit uses a high voltage transistor of the time. Observe...
This voltage inverter uses a small transformer. The circuit was found in the April 1995 issue of...
We found this circuit for musical instruments in the March 1992 Radio Electronics magazine. The...