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 oscillator was found in the November 1986 issue of Radio Electronics magazine. The frequency...
We found this circuit in Motorola's Linear Databook in 1990. The integrated circuit used is no...
This circuit was found in American documentation from the 1960s. The operational amplifier is from that...