Roy, ESR is a sort of object for those trying to flount something special.? Measuring it is usually a waste of time.? If a capacitor's ESR has a high value, that is generally made obvious by a high D when measured properly on a bridge.? If you need capacitance, you probably don't want a high D, whether that is from ESR or leakage.
For several years a popular DIY project was to build an ESR tester.? I don't think they are worth much.? For some reason, most people prefer the short cut of measuring a capacitor with a DMM that has a capacitance function, and those that use them generally have no idea how that device performs the measurement.? A proper bridge is the way to test capacitors.
Bob
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On Friday, July 23, 2021, 12:59:54 PM PDT, Roy Thistle <roy.thistle@...> wrote:
On Thu, Jul 22, 2021 at 05:00 PM, Ronan wrote:
my topic is not spam
Hi Ronan:
No worries:
Anything, and everything, I post (unless it's in quotes) is all and only just my opinion. (The moderators are the arbiters, not me.)
Thus, it's just and only my opinion that the posts about ESR Meters, on TekScopes, are spam.
To explain... ESR is a parasitic parameter that appears in the component model(s) for a particular realisation of capacitor(s).
ESR has its own parameter(s)... like frequency.
As such, I think the way ESR is popularly interpreted is baloney.
--
Roy Thistle
