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Power Supply Circuits and Schematics

This is a schematic (circuit diagram) for a relatively simple variable-voltage DC power supply, with 0.7-24 Volts DC and 0.05 - 2.0 amps current.
Schematic for a simple but very effective LM317 based DC power supply with adjustable output voltage.
This is a very simple electronic circuit schematic that uses the LM338K voltage regulator IC to achieve a variable voltage DC power supply in the 1-30 range, with 5 Amps maximum rating.