Products > Test Equipment
East Tester ET4410 ESR Measure
Martin72:
--- Quote from: The Electrician on July 25, 2022, 10:57:40 pm ---What is a "glimmer" capacitor?
--- End quote ---
The german word for "Mica", sorry for not translating that.
https://www.reichelt.de/de/en/mica-capacitor-10-nf-100-v--1--cy-22-5-10n-p42453.html?GROUPID=3158&START=0&OFFSET=16&SID=94c8b836af2ba4924e602b770031c41804c22b97609adc734fdca&LANGUAGE=EN&&r=1
These ones ans then 10nF.
mawyatt:
A few days ago we ordered some high "Q" film capacitors since we had none on hand, these were some Polystyrene, Molded Mica, Dipped Mica and few of the Polyproplyene and a film mixture. We had some Polyester or Mylar types already, and various ceramic types including NPO/COG.
To evaluate these high "Q" types we had just received we use the Hioki IM3536, Tonghui TH2830 and DER-EE DE-5000 LCR meters. Attached in the page from our notebook to browse thru, and all measurements were done at 100KHz within each meter's range.
The 1nF Polystrene has a very high Q of ~10,000 (D of 0.0001) and even caused the IM3536 to flicker into a Display Out of Range condition which occurs at D of 0.0001. Although the IM3536 remained reasonably stable with all the tests, the TH2830 was't quite as good with a bit more randomness and not reading as high a "Q" as the IM3536 (averaging was employed to help stabilizes the IM3536 & TH2830 meters, the DE-5000 doesn't have this option setting).
You can see the good correlation between all meters in capacitance readings everywhere, but no so well with the ESR and subsequently D and Q with high "Q" types. At the bottom are the Mylar and Polypropylene types and the meters agree reasonably well with these lower Q capacitors as has been previously mentioned.
Best,
indman:
--- Quote from: Martin72 on July 16, 2022, 12:02:59 pm ---Therefore I said not again... ::) :P
We can discuss about in one of the DE5000 threads, here it´s off-topic.
--- End quote ---
Now it's allowed to mention DE-5000 again in this thread, several times in a row? Was it not long ago that I was forbidden to do this? ;D
Martin72:
I think you know how it´s meant. ;)
@mawyatt:
Interesting that even the hioki won´t be "flawless".
The Tonghui is the same LCR like the ST2830 we got.
I must read the ST manual again, also the one of the keysight - But i´m pretty sure that there are no remarks in it about the limitation of the ESR (Rs) measure.
Same on the ET4410 and of course DE5000.
So the conclusion could be that we can´t expect proper ESR/Q readings for every cap-type on the "cheapos" up to the costs of a TH/ST LCR...Hmm.
indman:
--- Quote from: Martin72 on July 26, 2022, 07:30:04 pm ---So the conclusion could be that we can´t expect proper ESR/Q readings for every cap-type on the "cheapos" up to the costs of a TH/ST LCR...Hmm.
--- End quote ---
In this case, non-TH/ST LCR devices cannot be considered full-fledged METERS, but should be transferred to the category of AMATEUR DISPLAY METERS with random readings. ;)
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