This circuit is from a Radio Electronics from February 1966. The circuit is of a type that was found in many applications at the time as output from radios, televisions and other equipment.
Using transistors at the time, this circuit was found in a 1967 Ferranti documentation. The...
These circuits were found in Exar documentation from the 90s. The circuits use both a small...
Found in Radio Electronics, this circuit is intended to activate the lighting system of garages...