Overview:
Power conversion efficiency is specified as the ratio of the output power
to the input power, in a certain percentage. It is usually specified under
a very specific set of conditions including nominal line voltage and maximum,
or near-maximum, load current.
Procedure:
Set and record the exact values of the input/line voltage Vin and the
output/load current Iout as desired. You can calculate efficiency using
any desired I*V product as the following:
E = (Vout*Iout)/(Vin*Iin) * 100%
You can vary the values of Iin and Iout and then calculate the efficiency
for several currents.
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