- Linear power supply provides a constant source of DC voltage and current for powering and testing electronic devices in service, engineering, production, educational, and home applications requiring low current One output supplies an adjustable voltage of up to 30VDC or adjustable current of up to 1 amp Fine and coarse controls for adjusting current and voltage LED screens show current and voltage output Direct control through front panel interface or remote control through rear RS-232 interface.
The B&K Precision 1739 single-output DC linear power supply
provides a constant source of DC voltage for powering and testing
electronic devices in service, engineering, production,
educational, and home applications requiring low current, such as
4-20mA (milliamp) loop testing and calibration. The power supply
unit (PSU) has one output that provides voltage of up to 30VDC
and current of up to 1 amp, and the voltage and current output
can be adjusted using fine and coarse controls on the unit's
front panel. Two 4-digit LED screens show current and voltage
output. The PSU can be controlled directly with the front control
panel or remotely through the unit's RS-232 interface (cable
included). When turned on, the PSU recalls the most-recent
current and voltage settings used. A 1mA adjustable current limit
with 0.1mA resolution helps protect against current overload.
Built-in protection against overload, short-circuit, and reverse
polarity helps prevent damage to equipment and reduce risk of
shock. The unit can be set to accept an input line voltage of
120V, 220V, 230V, or 240VAC.
Specifications
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Number of outputs1Maximum voltage and current outputVoltage:
30VDC; Current: 1 ampLoad regulation, + or – (% of output +
offset)Voltage: 0.04% + 1mV (millivolt); Current: 0.4% +0.1mA
(milliamp)Line regulation, + or – (% of output + offset)Voltage:
0.1% + 3mV; Current: 0.4% +0.3mARipple and noise (20 Hz to 20
MHz)Less than or equal to 1mV, RMS (root mean square)Ripple
currentLess than or equal to 0.4mA RMSTransient response timeLess
than or equal to 75 μs (microseconds)Metering resolution and
accuracyVoltage: 10mV at 0.5% + 2 digits; Current: 0.1mA at 0.5%
+ 2 digitsPower requirements110V or 220VAC at 50 or 60 Hz, + or –
10%Operating temperature and humidity32 to 104 degree Fahrenheit,
0 to 40 degree Celsius, less than 75% relative
humidityWeight4kg/9lb.Dimensions158 x 140 x 318mm/6.2 x 5.5 x
12.5 inches (H x W x D)
H is the vertical distance from lowest to highest point, W is the
horizontal distance from left to right, and D is the horizontal
distance from front to back.
Power supply units (also known as PSUs, AC power supplies, DC
power supplies, and battery eliminators) provide AC or DC voltage
to power or test devices such as tools, appliances, and
electronic components. The PSU draws energy from a line source
such as a wall socket and converts it to a constant, specified
a of voltage or current that is then outputted to a
connected device. In general, a power supply unit will be
classified as either a linear PSU (also known as a linear
regulation or line-frequency PSU) or a switched PSU (also known
as a sw-mode power supply, SMPS, or switcher). Typically,
a linear PSU has a simpler design and provides a faster transient
response time and less electrical interference and noise than a
switched PSU. A switched PSU is often smaller, lighter, and more
efficient than a linear PSU and generates less heat. The
transient response time of a PSU indicates how quickly the PSU
can resume the desired constant output after a sudden change in
input. Ripple voltage or current indicates how much unfiltered
noise and AC voltage or current is present at the output of a
filtered power supply operated at full load. The temperature
coefficient is the percent average change in output voltage per
degree centigrade of change in ambient temperature. Fuses,
current limiters, and other forms of overload protection can be
built into the PSU to help protect against voltage spikes or
short-circuiting.
B&K Precision manufactures test and measurement instruments for
research and development, production-line testing, and electronic
field service applications. The company, founded in 1951, is
headquartered in Yorba Linda, CA. It meets International
Organization for Standardization (ISO) standard 9001:2008 and is
compliant with Restriction of Hazardous Substances (RoHS) and
waste electronic and electrical equipment (WEEE) directives.
What's in the Box?
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* B&K Precision 1739 power supply unit
* RS-232 cable
* Power cord
* Instructions