B&K Precision 1739 - Manual - Manual (Page 7)

5
2 Introduction
Description
The B&K Precision model 1739 is a high quality, low current DC power source.
This power supply provides 0-30 volts dc output, adjustable with both coarse and
fine voltage controls for precise settability. The current output is 0-1 amps,
adjustable with both coarse and fine current controls. Two large LED meters
continuously monitor the output voltage and current. The VOLTAGE meter is
green, while the CURRENT meter is red.
The power supply can be programmed locally from the front panel or remotely
through the RS-232 interface. Two large LED meters continuously monitor the
output voltage and current. The voltage meter is green, while the current meter
is red. The power supply can be operated locally from the front panel or
remotely through the RS-232 interface.
The 1739 exhibits excellent regulation and low ripple characteristics. The circuit
design incorporates a pre-regulator, which greatly reduces internal power
dissipation at low output voltages. The styling is both attractive and functional.
The mechanical configuration conserves bench space and allows for easy
portability.
This instrument may be used in constant voltage or constant current
applications. The crossover from constant voltage to constant current modes is
smooth and automatic. LEDs indicate the “CV” (constant voltage) or “CC”
(constant current) mode of operation. In constant voltage applications, a current
limit may be preset. When load variations cause the current to reach the preset
limit, the unit then regulates output current rather than output voltage.
Current limits are adjustable from 1.0 mA to maximum, in as little as 0.1 mA
steps. In constant current applications, the maximum voltage may be preset.
When load variations cause current to drop below the regulated value, the unit
reverts to regulated voltage operation at the preset value.