This medium power circuit is from an English publication from 1989. The integrated circuits are of types that are still obtainable. The power supply must source at least 2A.
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This simple power supply, which is equivalent to 2 AAA or AA batteries, was found in an Elektor...
This circuit can source up to 1,000 V from a 9 V battery. Output current is very low, some...
The presented rectangular oscillator makes use of one of the four NAND ports of a 4093 integrated...