Detecting a failed capacitor is easy sometimes just by performing a visual inspection, but there are many cases in which you would need an LCR meter to spot any failure. In this article, I covered the most common failure cases of electrolytic, polyester (MKT), and ceramic (MLCC) type capacitors...
Hi.
I've bought my first LCR meter, capable of testing at 100 Hz to 100 kHz.
It can measure ESR in Cs mode (capacitance, series measurement).
For electrolytics, it seems to work fine.
But, if test a good 100 nF ceramic capacitor, it measures hundreds of ohms resistance, which it obviously must...
I did not fully understand Equivalent Series Resistance until recent ETO posts about capacitors , and as my PIC24 projects sometimes need a 10uF low ESR for VCAP pin, I decided to build a meter as per the link , all seems to work OK, ( after I got the 2N2222 in correctly ! ) I have just set it...