This circuit was found in a 90's EDN. The circuit provides two 15 V outputs and one 5 V output from the 12V voltage of a car battery. The components are from that time.
This circuit for the 1750 m band was published in the September 1989 Radio Electronics magazine. The...
This circuit provides reverse power polarity protection using a power MOSFET and a diode. The...
The great advantage of the circuit shown in the figure is that its frequency is controlled by a...