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A 15 Watt Switchable Resistive AC Load
Useful for calibrating an AC wattmeter
This was built in
a plastic box -not a good idea because one has to be
very careful not to let the
resistors get too hot. A metal box would be
better, but in that case, be sure
to ground the box.
Find updates at www.projects.cappels.org
Be sure the switch is rated for the voltage and current to which it
will be exposed.
A fuse on the input would be a nice improvement.
Contents ©2011 Richard Cappels All Rights Reserved. Find updates
First posted in June, 2011
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