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.
We found this zener regulator in a 1978 radio amateur documentation. The operational can be...
This sensitive circuit was found in old documentation. The SCR can be any of the 106 series and...
This simple receiver was found in a book on transistors from 1954. The coil determines the...