With [Paulo]’s DIY ESR meter, of course. An ideal capacitor has a zero equivalent series resistance, and failure of a capacitor can be seen as an increase in its ESR.

Even if you have no need for an ESR meter, [W2AEW] ... 11 thoughts on “ Getting A Handle On ESR With A Couple Of DIY Meters ” RÖB says: November 14, 2016 at 4:54 pm ...

Now, let’s try to use the new circuit of the 555 for something useful. The measurement of a capacitor’s equivalent series resistance (ESR) may become a problem since the ESR can be very low, about ...