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Published on Mar 18, 2017
A couple years ago one of my viewers contacted me, and asked if I had any idea why the bridge rectifier in his power supply blew up while he was testing it. Unfortunately he had plugged the meter probes from his meter into the current measuring ports, and didn't understand how this created a short circuit across his meter probes. In this video I demonstrate why that is, and some of the various kinds of meters used to measure amperes, and how shunts are used to calibrate ampere meters.