DIY in circuit capacitor ESR meter

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Here’s a DIY in circuit capacitor ESR meter build by Lawrence:

This project was conceived as a way to enhance the collection of test equipment on my test bench. I buy a lot of older HP test gear off ebay as well as older radios. Most of this gear is 25-60 years old and needless to say, the condition of the electrolytic capacitors is somewhat suspect. I needed a way to quickly weed out bad caps with an in circuit tester.
At the present time, there are no plans to market circuit boards, kits, parts or complete units for sale.

Via Hacked Gadgets.

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