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 an old American publication, this circuit is intended for audio experiments. The...
This battery-powered micropower supply was shown in Radio Electronics magazine in 1991. The...
This power supply for model railroad was found in a February 1961 Radio Electronics Magazine. The...