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.
Found in Radio Electronics from the 90's, this circuit employs a 3140 operational amplifier, still...
This simple logic probe circuit was found in the August 1980 issue of Radio Electronics magazine. The...
This is one of many versions of this circuit that the reader can find in this section. The circuit...