Data Sheet
High Current Switching DC Power Supplies
Models 1693 & 1694
High Current at a Low Price
B&K Precision models 1693 and 1694 switching
mode DC power supplies provide high current
output in a lightweight and compact form factor.
These 900W power supplies provide a variable
voltage output from 1V to 15V at 60A (model
1693) or from 1V to 30V at 30A (model 1694).
In addition, a remote sensing terminal is available
to compensate for voltage drop across the load
leads.
The analog remote control feature can be used
to control the output voltage or turn the output
on/off.
Outputs/Model 1693 1694
Variable Output Voltage 1 - 15 V 1 - 30 V
Output Current 60 A 30 A
Switching power supplies have the advantage of
being lightweight and high in efficiency when
compared to traditional linear mode power
supplies. The efficiency of the 1693 and 1694
can exceed 85% under optimal conditions. These
power supplies are also designed with advanced
circuitry to protect against overtemperature and
overvoltage conditions. Combined with bright
LED displays, the 1693 and 1694 are ideal for
users who want a reliable and easy-to-use
high-current DC power supply for system or
bench use.
Features and Benefits
■ Up to 60 A output current
■ Lightweight and compact
■ Dual 3-digit LED displays
■ Remote sense terminal
■ Analog remote control via external voltage
source or variable resistor
■ Current foldback circuitry with illuminated
indicator prevents overloading the power
supply
■ Overtemperature protection circuitry
■ Overvoltage protection
■ Front panel auxiliary output
Technical data subject to change
© B&K Precision Corp. 2011
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High Current Switching DC Power Supplies
Models 1693 & 1694
Easy OperationValuable Features
Auxiliary Output Terminal
Conveniently placed on the front panel for
quick use, this auxiliary terminal is connected
in parallel with the main output terminal and
provides an additional output for your
application.
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 or to turn the output on/off.
Power ON LED
Rear Panel
Main output
terminal
Remote sense
terminal
Bright, dual LED displays
Auxiliary output terminal
Cooling fan
Overload LED
indicator
Output voltage
control knob
Remote Sense
Improve regulation of the power supply’s
output voltage at the load by using the
remote sense terminals to compensate for
voltage drops across the load leads.
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Analog remote
control terminal
Analog remote control
ON/OFF switch
High Current Switching DC Power Supplies
Models 1693 & 1694
Specifications
Model 1693 1694
Variable Output Voltage 1-15 V 1-30 V
Output Current 60 A 30 A
Rated Auxiliary Output Current 5 A 3 A
Ripple and Noise 40 mVpp
Load Regulation 0.1% + 5 mV
Line Regulation 0.05% + 3 mV
Input Voltage 100-240 VAC, 50Hz/60Hz
Efficiency >85%
Dynamic Power Factor Correction >0.97 at optimal load
Voltmeter and Ammeter Display 3-digit LED displays
Meter Accuracy +/- 1% + 1 count
Indicator
Special Features Analog Remote Control & Remote Sense
Cooling Method Variable speed thermostatically controlled fan
Operating Temperature 32 °F to 104 °F (0 °C to 40 °C)
Protections
Approvals CE-EMC: EN 55022 CE-LVD:EN 60950
Dimension (W x H x D) 8.66” x 4.33” x 14.17” (220 x 110 x 360 mm)
Weight 12.8 lbs (5.8 kg)
Overload (Constant Current Limiting), Short Circuit, OTP (Overtemperature Protection),
Green LED for power on/off indication
Red LED for overload/short circuit indication
and OVP (Overvoltage Protection)
One Year Warranty
Included accessories: Power cord, instruction manual, remote control connector
Note: All specifications apply to the unit after a temperature stabilization time of 15 minutes over an ambient temperature range of 23 °C ± 5 °C.
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