The transformer in this power supply can have a secondary winding from 1 to 15 A of current. Voltage is given by the zener diode. Transistor 2N3055 must be mounted on a good heat radiator.
This circuit was found in an American publication called Ham Radio. The circuit uses still current...
From an audio signal, this circuit gets two signals of the same amplitude and opposite phases....
Found in an Electronic Design from 1968 this circuit generates a linear sawtooth signal modulated...