Hi! I'm sorry if I ask a question that has already been answered, but I couldn't find anything with search.
I have one question, and there is no better forum than "BadCaps" for this!
Namely, I am building an ESR meter and I did read somewhere (I really can't remember where) for problem with small ceramic capacitor in parallel with C.U.T.
Allegedly, certain ESR meters (that uses 100kHz test-signal or something like that) can not measure in-circuit ESR of an capacitor that is connected in parallel with cer. capacitor, as I said. I'm not a beginner in electronics, but I really can't figure out how such a small capacitor with kiloohms of reactance can affect (or even prevent) in-circuit ESR measurements with ANY kind of meters?
However, I remember of very resolute claims that such a combination of capacitors is utterly hopeless for many ESR meters.
So if somebody knows something more, please let me know!
TIA, and sorry for my bad English!
I have one question, and there is no better forum than "BadCaps" for this!
Namely, I am building an ESR meter and I did read somewhere (I really can't remember where) for problem with small ceramic capacitor in parallel with C.U.T.
Allegedly, certain ESR meters (that uses 100kHz test-signal or something like that) can not measure in-circuit ESR of an capacitor that is connected in parallel with cer. capacitor, as I said. I'm not a beginner in electronics, but I really can't figure out how such a small capacitor with kiloohms of reactance can affect (or even prevent) in-circuit ESR measurements with ANY kind of meters?
However, I remember of very resolute claims that such a combination of capacitors is utterly hopeless for many ESR meters.
So if somebody knows something more, please let me know!
TIA, and sorry for my bad English!
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