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Section 3. Load Connection and Sensing
Introduction
This section covers single and multiple load connection, constant voltage and
constant current operating modes, and alternate power supply configurations such as
series and parallel connections.
Load Connection
WARNING
There is a potential shock hazard at the load when using a power supply with an
output greater than 40 V. Take appropriate precautions to protect personnel against
accidental contact with hazardous voltages. Also ensure that the insulation rating of
the load wiring and circuitry is greater than or equal to the maximum voltages to
ground being applied.
CAUTION
When making load connections, be sure to observe correct polarity or the power
supply may be damaged.
You can obtain reliable performance from your power supply if you take certain
basic precautions when making load connections.
To obtain a stable, low noise output, pay attention to the following:
1.
consider the conductor ratings, the system grounding techniques and the way
that you make AC input, DC output, and remote sensing connections
2.
use a conductor size that satisfies the current rating requirements
3.
to overcome impedance and coupling effects, we recommend larger gauge wire
and shorter leads.
4.
where positive load transients such as back EMF (electromotive force) from a
motor may occur, connect a transorb or a varistor across the output to protect the
power supply.
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