Schematic for Adjustable 0-25V 5A DIY Power Supply with Voltage & Current Control

The discussion centers on designing a DIY adjustable power supply capable of delivering 0-25V at 5A with both voltage and current control. An initial video series demonstrates building such a supply using op amps, TIP transistors, or stable voltage regulators, with potential for software adjustment via PIC or Atmel microcontrollers. Queries about adding a current regulator are addressed by referencing the video’s detailed section on current regulation. Alternative solutions include the MSK 5012 high-current voltage regulator, noted for its robustness but potential cost and availability issues. Another recommended design is found on a Tripod webpage, which closely resembles commercial models like the Manson EP-920 and EP-925, as well as similar units from Maplin Electronics, CPC, and Conrad Electronics, all sharing nearly identical circuitry. The ARRL Handbook (1988 edition, Chapter 27) also features a comparable design with a 10A current limit but lacks adjustable current limiting. These resources provide practical schematics and component suggestions for building a stable, adjustable power supply with integrated current regulation.
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