Keysight E3630A, Руководство по эксплуатации и обслуживанию

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5 Service Information
48 Keysight E3630A Operating and Service Manual
Figure 5-2 Front panel terminal connections
Selecting load resistors
Power supply specifications are checked with a full load resistance connected
across the supply output. The resistance and wattage of the load resistor,
therefore, must permit operation of the supply at its rated output voltage and
current. For example, a supply rated at 20 volts and 0.5 amperes would require a
load resistance of 40 Ω at the rated output voltage. The wattage rating of this
resistor would have to be at least 20 watts.
Electronic load
Some of the performance test procedures use an electronic load to test the supply
quickly and accurately. An electronic load is considerably easier to use than a load
resistor. It eliminates the need for connecting resistors or rheostats in parallel to
handle the power, it is much more stable than a carbon-pile load. It is easier to
switch between load conditions as required for the load regulation and load
transient response tests.
Output current measurement
For accurate output current measurements, a current sampling resistor should be
inserted between the load and the output of the supply. To simplify grounding