Data Sheet
Low Current High Resolution DC Power Supply,
30 V, 1 A
Model 1739
Features and Benefits
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Low 1 mA settable current limit with
0.1 mA resolution
Output on/off button
Exceptionally low current ripple and noise
(<0.4 mArms)
Excellent regulation
Constant voltage (CV) and constant current
(CC) operation
Two large, easy-to-read LED displays provide
good visibility in bright or low light conditions
CV and CC mode indicator
Automatic recall of saved voltage and current
settings upon power-up
RS-232 interface
Isolated output
Overload protection
Reverse polarity protection
Power-on self test
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The B&K Precision model 1739 is a high
resolution, low current DC power source with
excellent load regulation and low noise
characteristics. Two 4-digit LED displays
continuously monitor the output voltage and
current. The power supplies can be operated
locally from the front panel or remotely through
the RS-232 interface. The mechanical
configuration conserves bench space and allows
for easy portability.
This power supply is well suited for electrical and
electronics applications requiring precise levels of
low current, including 4-20 mA current loop
testing, calibration, or basic IC testing.
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Low Current Precision Design
The 1739 is a low current precision power supply designed especially for small current applications
that require a clean and precise source. Using a MOSFET circuit design and high quality components
with very low temperature coefficients, the power supply is extremely stable and capable of outputting
current as low as 1 mA with a 100 uA settable resolution. The power supply is also implemented with
a high performance AC line filter to minimize noise on the power line before rectification, allowing for
very low ripple and noise at the output.
Technical data subject to change
© B&K Precision Corp. 2012
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Low Current High Resolution DC Power Supply, 30 V, 1 A
Model 1739
Front Panel
Specifications
Model
Output Rat ing s (0 ° C~ 40 °C)
Voltage
0-30 V
0-999.9 mA
Voltage and
current
coarse and
fine control
1739
Bright, 4-digit
LED displays
Current
Load Regulatio n ±(% of o ut put +off set)
Voltage
Current
Lin e Regulation ±(% of o ut put +off set)
Voltage
Current
0.04% + 1 mV
0.4% + 0.1 mA
0.1% + 3 mV
0.4% + 0.3 mA
Output terminals
LED indicators for
constant voltage and
constant current modes
Ripple & Noise (20 Hz ~ 20 MH z)
Voltage
Current
Recovery Time
M ete r Reso lution
Voltage
Current
10 mV
0.1 mA
<1 mVrms
≤
0.4 mArms
≤
75
μs
Rear Panel
Fanless heatsink
design for quiet
bench operation
M ete r Accuracy
Voltage
Current
Ge neral
0.5% + 2 digits
0.5% + 2 digits
RS-232 interface enables the
instrument to be remotely
controlled via PC
Power Requirements
Power Consumption
Protection
Operatin g En vironmen t
110/220 VAC ±10%, 50/60 Hz
≤
70 VA
Reverse polarity, current limiting
PC Connectivity
Control your instrument via RS-232 interface through the application
software* or by sending programming commands. The application soft-
ware provides a virtual front panel and a simple data logging function to
store and log data to a text or CSV file.
Temperature
Humidity
Temperature coefficient (0 °C~35 °C)
±(％of output+offset)
Storage Temperature
Storage Humidity
M echanical Specifi cati ons
Weight
Dimensions (W x H x D)
32 °F to 104 °F (0 °C to 40 °C)
75% R.H.
300 ppm/°C
5 °F to 158 °F (-15° to +70° C)
85% R.H.
9 lbs (4 kg)
5.5” x 6.2” x 12.5"
(140 x 158 x 318 mm)
Three Year Warranty
Supplied Accessories
Power cord, instruction manual, RS232 cable
Note: All specifications apply to the unit after a temperature stabilization time of 30 minutes.
*Available for download at www.bkprecision.com
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Mouser Electronics
Authorized Distributor
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