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Bench Power Supply, Adjustable, 1 Output, 1 V, 60 V, 0 A, 5 A


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Technical Datasheet:
BK1685B   Datasheet
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Technical Documents (2)

Product Overview

The BK1685B from B&K Precision is a switching DC power supply with 1V to 60V variable output voltage, 0A to 5A variable output current. This laboratory grade power supply has high current output in a small, lightweight form factor. It provides various configurations of output voltage/current and features rotary encoder control knobs which make setting voltage/current levels fast and precise. Its dual action push button allows user to easily set both coarse and fine, voltage and current levels. In addition to its constant voltage (CV) and constant current (CC) modes, this high efficiency DC power supply offers preset and remote control modes. For remote control, an analogue remote control terminal is accessible on the rear or use USB interface to communicate with the power supply via PC software or remote commands. These features make 1687B suitable for production testing, telecommunications, R&D, electronic field service and university labs.
  • 3 user defined voltage and current presets, 3.7A (100VAC)/1.7A (230VAC) full load current
  • Automatic CV/CC crossover operation, analogue remote control function, USB interface
  • PC software for remote control and external timed programming
  • Front panel auxiliary output, overvoltage, overtemperature and overload protection
  • Load regulation of ≤ 50mV Load (voltage, 0-100% Load), ≤ 100mA (current, 10-90% rated voltage)
  • ≤ 20mV (voltage), ≤ 50mA (current) line regulation at 90-132VAC, 170-264VAC variation
  • ≤ 5mV (RMS), ≤ 50mV (peak-peak) ripple & noise voltage, ≤ 30mA current ripple & noise (RMS)
  • 3-digit LED display, ±0.2% + 3 counts voltage and current meter, 100 to 120KHz switching frequency
  • 82% (100VAC), 86% (230VAC) efficiency, 1.5ms transient response time (50-100% load)
  • 200 x 90 x 208mm dimension (W x H x D), 2.4Kg weight and 0°C to 40°C operating temperature


Test & Measurement


1685B switching power supply, Power cord, Instruction manual, Application software CD, USB cable, Remote control connector.


While connecting power supply to the AC mains using provided power cord, make sure the mode selection switch is in the normal position.


This product uses components which can be damaged by electrostatic discharge (ESD). To avoid damage, be sure to follow proper procedures for handling.

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