Indicated for automotive use, this circuit was found in a Popular Electronics from the 90s. The circuit uses a power transistor that must be equipped with a heatsink.
This circuit is from an American 1964 documentation. Transistors of the time are used, but modern...
This circuit simulates lightning using a small white lux type fluorescent lamp. The circuit is...
This circuit was found in an American transistor book from the 50's. The indicated transistors are germanium...