30 Mar '14, 11am

Measure Capacitor ESR with an Oscilloscope and Function Generator

This video discusses how to measure the ESR (equivalent series resistance) of a capacitor using an oscilloscope and function generator. All of the capacitors tested in this video were 220uF electrolytic caps. In reality, the resistance in the plates of a dried out electrolytic capacitor can’t be modeled as a simple series resistor, but for the purposes of identifying good from bad, this simplification works fine.

Full article: http://www.electronics-lab.com/blog/?p=27634

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