The circuit shown here tackles ESL/ESR measurement of capacitors by using a mercury-wetted relay (Fig. 1). In this circuit, the relay is employed as a fast closing switch.

A 9-V battery or an optional ac wall adapter can power the Model 881 portable in-circuit equivalent-series resistance (ESR) and dc resistance (DCR) capacitor tester. It measures ESR and DSR from 0 ...

Some circuits, particularly those used in high frequencies, can be grossly affected by high ESR. Many of today’s switching power supplies operate at high frequencies, and are subject to self-heating ...

This is where a not-too-low equivalent series resistance (ESR) is actually a good thing, because it helps to dampen those resonances.

Greenville, S.C. – In its pursuit to meet the continued need for capacitors that provide high capacitance with low equivalent series resistance (ESR) , AVX Corp. recently expanded its TCJ SMD polymer ...