Testing Capacitors and ESR

MichaelHeit AD7VV

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  • There is only one God, and his name is Jesus.
    • Everts Air Alaska Flight Simulator Division
Testing Capacitors and ESR
« on: September 14, 2019, 12:13:23 PM »
Question: does testing a capacitor with the Huntron show ESR? I suppose if the ESR was high enough it would be a factor in the signature, but if it weren't yet high enough would there be a way to determine it?? I have a ESR tester I bought and it will give a value, however determining of that value is a factor in circuit is a crap shoot as far as trying to use it in troubleshooting.

Just some thoughts as I learn ASA.

Thank you for any replies.

Mike AD7VV
Michael Heit
Electronics Engineer Everts Air Alaska AD7VV


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Re: Testing Capacitors and ESR
« Reply #1 on: September 20, 2019, 07:42:06 AM »
If you are looking for an actual value then no, ESR is not indicated. The Tracker can show leakage issues in the form of increased angle in a capacitive signature which would also affect ESR value.
The most important troubleshooting tool is your eyes.

Re: Testing Capacitors and ESR
« Reply #2 on: December 12, 2019, 06:59:12 PM »
testing with ESR meter you can get precise values down to 0.06R
Huntron  sees  influence of other components on the cap in-circuit ...to gain  understanding of circuit connections , some components might affect esr readings.
Both have merit depending on the circuit under test and how you use them .
« Last Edit: December 15, 2019, 01:56:13 PM by tracker »