48 U8001A/U8002A User’s and Service Guide
5Service Guide
Electronic Load
Many of the test procedures require the use of a variable load
resistor capable of dissipating the required power. Using a
variable load resistor requires that switches should be used to
connect, disconnect, and short the load resistor. An electronic
load, if available, can be used in place of a variable load resistor
and switches. The electronic load is considerably easier to use
than load resistors. It eliminates the need for connecting
resistors or rheostats in parallel to handle power, it is much
more stable than carbon- pile load, and it makes easy work of
switching between load conditions as is required for the load
regulation and load response tests. Substitution of the
electronic load requires minor changes to the test procedures in
this chapter.
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