Products > Test Equipment

LCR meter questions and maybe recommendation.

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tautech:

--- Quote from: rwgast_lowlevellogicdesin on June 03, 2024, 02:15:32 am ---Thanks for the info, ill probably just pick up an LCR meter to use in conjunction with my other devices. Probably the east tech desk meter or a peak lcr meter. I dont have much of a need for tweezers, if im using smd i trust the package.. this is more for verifying home made coils.

--- End quote ---
Which was my initial need too.

Just because they are SMD tweezers don't by any means think that's all they can do.

shabaz:
I don't know if the online specs for the ST42 are correct or not, but it's a bit concerning. The minimum inductance is 0.5uH, which is going to be troublesome if checking typical coils for (say) VHF purposes. I often use far smaller inductances, hand-wound.

Appreciate not everyone will need small inductances, but OP has a callsign in their signature, so there's a chance small inductances might be needed for commonly-used bands, so worth raising as a thing to check, before ruling any LCR meter in or out.


KungFuJosh:

--- Quote from: shabaz on June 03, 2024, 03:25:57 am ---I don't know if the online specs for the ST42 are correct or not, but it's a bit concerning. The minimum inductance is 0.5uH, which is going to be troublesome if checking typical coils for (say) VHF purposes. I often use far smaller inductances, hand-wound.

--- End quote ---

Measuring in the nH range is more difficult, and even more expensive LCR meters have trouble doing so. I think 500nH is fairly impressive for such an inexpensive tweezers.

The attached chart is for a high quality bench LCR series that costs between 10 to 20 times more than the ST42, and the 100nH to 10nH ranges are clearly not ideal, even at that price range.

shabaz:
Agree, it seems a useful tool in any case. I just meant to highlight it in case the OP intends to measure smaller inductances.

Martin72:

--- Quote from: tautech on June 02, 2024, 11:36:49 pm ---Yes of course Martin but your measurements needs do not equate to what other might require.

What is good enough is very different for us all.  ;)

--- End quote ---

It has little to do with it, I just wanted to point out that you can't cover everything with one device and if the OP only has standard tasks (he doesn't), then he can use almost any meter. ;)

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