Products > Test Equipment
LCR vs ESR meter for in-circuit testing of electrolytic cap
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TimFox:
If the total circuit including the device under test is appropriate to the simple ESR meter, then by all means use it to get an indication.
Kean:
An LCR meter will generally be designed for better accuracy rather than in-circuit measurement.  ESR measurement is a special case.
I didn't see any mention of in-circuit testing in the specs of the DE5000, but I may have missed it.  I don't own one.
tautech:

--- Quote from: KungFuJosh on September 10, 2023, 05:35:28 pm ---In-circuit testing is rarely simple, as there's often other things that will throw off your readings.

Personally, I prefer the Shannon Tweezers ST42.

--- End quote ---
This ^
Best KISS cost effective solution.
Kean:
I do like my Shannon tweezers, but they certainly wouldn't be the first thing (or even second/third) I'd think of using on suspect electrolytic caps.
I fact, I'm not sure I've ever used them on an SMD electrolytic.  They do get used a lot on small SMD parts, 0603 and 0402.
Like the ESR70 they do have the benefit of selecting a very low test voltage.
tautech:

--- Quote from: Kean on September 11, 2023, 04:00:19 am ---I do like my Shannon tweezers, but they certainly wouldn't be the first thing (or even second/third) I'd think of using on suspect electrolytic caps.
I fact, I'm not sure I've ever used them on an SMD electrolytic.  They do get used a lot on small SMD parts, 0603 and 0402.
Like the ESR70 they do have the benefit of selecting a very low test voltage.

--- End quote ---
You need use ST42 more and get to know them better.  ;)
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