Found in a Radio Electronics store from the 90s, this circuit acts on the alternator. The circuit uses a 2N3055 that must be equipped with a good heat sink.
This amplifier with very high input resistance has variable gain and must be powered by a...
Found in an Electronics Now from the 1980s, this circuit is based on grid leakage current for...
Found in 1967 General Electric documentation this circuit uses a PUT and a diac to generate 1 kHz...