B&K Precision 1688B Datasheet
Data Sheet
Switching DC Power Supplies
Models 1685B, 1687B & 1688B
B&K Precision models 1685B, 1687B, and
1688B are laboratory grade switching mode
DC power supplies with high current output in
a small, lightweight form factor. These power
supplies provide various configurations of output
voltage and current, and feature rotary encoder
control modes. Save up to three different presets
of voltage and current values for quick recall. For
remote control, an analog remote control
terminal is accessible on the rear, or use the USB
interface to communicate with the power supply
via PC software or remote commands.
control knobs, which make setting voltage and
current levels fast and precise. Its dual action
push button allows the user to easily set both
coarse and fine, voltage and current levels.
These features make the 1685B Series suitable
for a wide range of applications including
production testing, telecommunications, R&D,
electronic field service, and university labs.
In addition to its constant voltage (CV) and
constant current (CC) modes, these high efficiency DC power supplies offer preset and remote
Outputs / Model 1685B 1687B 1688B
Variable Output Voltage 1 - 60 V 1 - 36 V 1 - 18 V
Variable Output Current 0 - 5 A 0 - 10 A 0 - 20 A
Features and Benefits
■ Automatic CV/CC crossover operation
■ Lightweight and compact
■ Rotary encoder control for precise voltage and
current setting
■ Save up to 3 user-defined voltage and current
presets for quick recall
■ PC software for remote control and external
timed programming
■ Analog remote control function
■ USB interface
■ Front panel auxiliary output
■ Overvoltage, overtemperature, and overload
protection
Technical data subject to change
© B&K Precision Corp. 2012
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Switching DC Power Supplies
Models 1685B, 1687B & 1688B
Work Easier
Fully Protected
Have peace of mind knowing that these power
supplies come with built-in OVP (overvoltage
protection), OTP (overtemperature protection),
and OLP (overload protection) circuitry. These
protections help prevent serious damage to
equipment in case of power supply failure
Custom Presets
Quickly use common voltage and current settings
with a flip of the Recall preset switch. Up to
three different presets can be set and recalled.
Flexibility & PerformanceDesigned to Make Your
Front Panel
Bright, dual LED displays
LED indicators for
constant voltage and
constant current modes
Rotary encoder knobs for
quick and precise setting
of voltage and current
Analog Remote Control Capability
Use the included connector to wire up to an
external variable DC voltage source or variable
resistor to remotely control the power supply’s
output voltage and current or to turn the
output on/off.
PC Connectivity
Control your instrument through remote
control PC software or use programming
commands to communicate with your
instrument.
Rear Panel
Main output
terminal
USB device port
Recall preset switch
Analog remote
control terminal
Rear control indicator
Mode selection
switch
Auxiliary output terminal
Cooling fan
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