Power Designs 2015R Transistorized DC Power Supply 0-20V 0-1.5A Benchtop

Power Designs 2015R Transistorized DC Power Supply 0-20V 0-1.5A Benchtop

The Power Designs Inc. 2015R is a transistorized benchtop DC power supply offering a continuously variable output of 0–20 VDC at up to 1.5 A. It features both Constant Voltage and Constant Current operating modes, selectable via a front-panel switch, with a dual-scale analog meter displaying output voltage (0–20V) and current (0–1.5A) simultaneously. A Fine Adjustment selector allows precise voltage setting.

Specifications & What's Included

• Model: Power Designs Inc. 2015R
• Type: Transistorized DC Power Supply
• Output Voltage: 0–20 VDC (continuously variable)
• Output Current: 0–1.5 A (continuously variable)
• Regulation Modes: Constant Voltage / Constant Current (front-panel selectable)
• Fine Adjustment: Yes — Fine Adj. toggle for precision voltage control
• Front Panel Meter: Dual-scale analog meter — Volts (0–20) and Amps (0–1.5)
• Output Terminals: DC+, DC−, and Ground (G) banana binding posts
• AC ON Indicator: Red pilot lamp with toggle power switch
• Fuse Holders: Two rear-accessible fuse positions — 3/4A and 2A
• Input Power: 120V AC, 2-prong cord (attached)
• Form Factor: Benchtop
• Manufacturer: Power Designs Inc., New York
• Includes: Unit with attached power cord only — no additional cables or accessories

Applications

Power Designs Inc. was a New York-based manufacturer of precision laboratory power supplies active from the 1950s through the 1980s, well regarded in electronics labs, universities, and research facilities for their stable, well-regulated benchtop DC supplies. The 2015R is a classic transistorized linear regulated supply from that era — a design that predates switching power supplies and is valued for its low noise and smooth regulation. Instruments like the 2015R are used on the electronics bench for powering circuits under development, biasing transistors and op-amps, running sensors, and any application requiring a clean, adjustable low-voltage DC source. The dual constant-voltage / constant-current capability makes the supply useful for both voltage-sensitive circuits and current-limited applications such as battery charging or LED testing. Vintage Power Designs units remain popular with electronics hobbyists, technicians, and collectors who appreciate the analog meter feedback and robust linear design.