DC Variable Power Supply. AC to DC Variable Power Supply. Perfect for bench testing TECs and finding the optimum power point. Also an essential electrical bench lab tool. Universal AC input. Easy to read digital display. Banana jacks and wire terminals for quick and easy electrical connections. Fully enclosed in metal enclosure. Jul 19, 2013 · Digital dc power supply using 8051 microcontroller for constant dc outputs. The fixed outputs are 3v,5v,6v,9v,12v. The user can change the resistor values to get other voltages. AT89c2051 is used here, which is a 20pin 8051 microcontroller. Sponsored Links Circuit diagram Search results for 'TekPower TP12001X 120V DC Variable Switching Power Supply Output 0-120V @1A, Digital Display With Back Light' Maximum words count is 10. In your search query was cut next part: @1A, Digital Display With Back Light. Amazon.com: variable dc power supply. Amazon.com DC Power Supply Variable, Adjustable Switching Regulated Power Supply 30V 5A with 4 Digits Display, Course and Fine Adjustments(00.01V, 0.001A), Data Hold - 110V/115CM Alligator Leads MDC01 Wahl Introduced a new variable-speed, rare-earth, permanent-magnet motor clipper. 1971 The company used its rechargeable battery technology and invented and produced the world's first successful cordless and rechargeable soldering iron, which also created a new Electronics Division in the company.