This circuit was found in a 1966’s Delco Radio documentation. Transistors are from the era, high voltage application types.
Found in a 1969 documentation on neon lamps, it actually takes advantage of the durability of the neon...
This filter is intended for 60 Hz noise suppression in amplifiers. We found it in American...
This circuit was obtained in an American publication of 1989, but the components are current. The...