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When you test a cap with a ESR meter should the High resistance indicate thet the cap is US.
EG I have two 250 v 220uf electrolytic caps.
The ESR reading on one is 0.06
The other one is 0.19
Which one is US.
Greg
I just ran a search for 220uf 35volt capacitors. I used 35 volt because I know there are many different types of capacitors at that voltage. I found caps rated at 80mOhm, 150mOhm, 200mOhms, 720mOhm, 800mOhm, 840mOhm. Then there are some caps where the ESR are not states. (real high)
At 250 volts I found a small range of ESR.
ESR is generally not rated at +/-5% but more like +/-35%, or more. If if often rated as 0.1 ohm max, where typical is not stated.
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