We found this circuit in the July 1988 Radio Electronics magazine. The frequencies are given by capacitor C1 and the voltage input is made at pin 1.
This 1969 Electronics World power supply has 5 V to power digital circuits and a 170 V output for...
This circuit is from old American documentation intended to trigger the flash of a camera flash with...
This sophisticated NiCad battery charger was found in a 1990s Elektor. The components used are...