BK PRECISION 1650 Tri Output Power Supply

The BK PRECISION 1650 is a triple output linear DC power supply engineered for laboratory testing, prototyping, and general electronics work. It delivers 50 W total power across three independent outputs: two variable channels (0–25 V DC each, 0.5 A max) and one fixed 5 V DC channel rated at 5 A. The variable outputs support independent operation or series/parallel tracking for expanded voltage and current capability.

Built-in analog metering displays voltage and current in real time. Overload, short circuit, and reverse polarity protection safeguard connected circuits. Continuously adjustable current limiting provides precise load control.

Standard binding posts and chassis ground terminal enable straightforward integration into test setups.

Technical Specifications

• Type: Triple Output Linear DC Power Supply


• Total Power Output: 50 W


• Output 1 & 2 (Variable): 0–25 V DC, 0.5 A each; independent or series/parallel tracking operation


• Output 3 (Fixed): +5 V DC, 5 A


• Input: 117 V AC, 60 Hz


• Metering: Analog voltage and current displays


• Current Limiting: Adjustable, load-protecting


• Weight: 9.2 lb


• Cooling: Natural convection

Key Features

• Dual independent variable outputs with continuous voltage adjustment


• Fixed 5 V output for dedicated rail supplies


• Series/parallel tracking extends voltage and current range


• Overload, short circuit, and reverse polarity protection


• Analog front-panel metering for real-time monitoring


• Metal chassis construction with standard binding post terminals


• Adjustable current limiting for circuit protection

Typical Applications

• Component testing and troubleshooting in the lab


• Educational demonstrations of power supply operation


• Simultaneous multi-rail prototyping and breadboard work


• Circuit validation under variable load conditions

Compatibility & Integration Standard binding posts and chassis ground terminal accommodate conventional lab patch cables and grounding schemes. Internal precision analog circuitry utilizes LM723 and LM324 operational amplifiers with optocoupler isolation, delivering stable, adjustable output regulation.