Found in a 1969 documentation, this circuit is reset by a push button. The activation time is 100 us. The transistors are from the era.
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...