BK Precision 1715A, Инструкция по эксплуатации

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APPLICATIONS
ELECTRONICS DESIGN LAB
The technician or engineer working in an engineering laboratory
requires a de power supply to power breadboard and prototype circuits.
This power supply is ideal because it monitors output -current, output
voltage, limits current to protect the circuit, is adjustable over a wide
range, and has excellent regulation and very low ripple.
Use of the instrument in an engineering laboratory is very similar to
that described for servicing electronics equipment and modules, except
that lower currents may be prevalent when powering individual circuits.
The current limiting feature is very valuable in this application because
it can protect unproven circuits from damage.
ELECTRONICS EDUCATION
The student in an electronics curriculum may use the power supply
for powering equipment and circuits as previ ously described for all other
applications. In addition, the power supply can be used in the classroom
laboratory to conduct experiments in fundamental electronics. In learn­
ing bhm' s law, for example, the relationships of resistance, current, and
voltage are easily demonstrated by the use of a power supply.
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BATTERY CHARGING
The power supply can be used as a battery charger to restore the charge
in rechargeable batteries such as lead-acid, nickel-cadmium, and some
alkaline types. Refer to the battery manufacturer's charging specifica­
tions for proper voltage and current settings. Charging information is
sometimes printed on the batteries. Battery charging, at least initially,
requires the constant current mode of operation. Before connecting the
power supply to the battery, preset the
VOLTAGE
controls to the fully
charged terminal voltage specified by the battery manufacturer. Tum off
the power supply while connecting the battery. Observe proper polarity
and connect as for constant current operation. Adjust the
CURRENT
control for the maximum charging current specified by the battery
manufacturer. (If the maximum charging current is greater than the
power supply's maximum load current, set the
CURRENT
control to
maximum). The
CC
indicator will light and the battery will charge at the
preset current limit. As the battery approaches full charge, its terminal
voltage will approach that of the power supply output and the charging
current will taper off. The power supply may automatically switch to CV
( constant voltage) operation. When this occurs, the power supply will
continue to provide a trickle charge.