Some ways to measure ESR

There are many misunderstandings about measuring electrolytic caps and their ESR. 99% of the ESR meters are hobby instruments and more indicators as meters. However they can be usable if you understand how to use them and what they measure. They are more or less only populair in commercial consumer stuff repairs and hobbyist who … Read more

Measuring inductor-cores and transformers

OK, you say, I have a LCR meter or a bridge so that’s a piece of cake. But inductors are kind a tricky when it comes to measuring. Especcially when they use core material. When I talk about inductors on this page, I mean inductors with cores. Beside self-inductance, an inductor has more parameters that are … Read more

About AC and RMS meters

There are several ways to note the amplitude of an AC signal. An AC signal has a value that switches over a certain time from V- to V+. It alternates between those values. The way to note this value is as Vtt or depending your language as Vpp (Volt-top to top, or Volt-peak to peak). If … Read more

ESR meten (also in English)

An updated version: http://www.pa4tim.nl/?p=3775 Een ELCO bestaat in werkelijkheid uit een weerstand (ESR), spoel (ESL) en de eigenlijke ELCO. Hier gaan we proberen deze zaken te meten. Om dat te doen zijn er diverse methodes. De beste manieren zijn speciale vectoriale 3 of 4 draads LCR meters of RF-IV (impedantie) meters. ook met een VNA gaat … Read more