| Products > Test Equipment |
| TH2830 vs TH2832 |
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| KungFuJosh:
--- Quote from: Martin72 on July 27, 2023, 08:47:46 pm ---12 instead of 10nH is good, better as I expected with such a "low" testfrequency. jXL is about 6mOhm - What Rdc have the coil ? --- End quote --- What's jXL? |
| Martin72:
XL is the reactance of the coil: XL= 2*pi*f(Hz)*L(H) |
| KungFuJosh:
--- Quote from: Martin72 on July 28, 2023, 02:26:36 am ---XL is the reactance of the coil: XL= 2*pi*f(Hz)*L(H) --- End quote --- What's the j? How did you get 6mΩ? If XL= 2*pi*f(Hz)*L(H), then isn't it: 2 x Pi x 200000 x 0.000 000 012 = 0.01508? Or 15.08mΩ... My DCR was 130mΩ, I assume that's due to the fixture or correction being off or both? |
| Martin72:
Ah, I took 100khz and 10nH , my fault, it was late... "j" stands for imaginary, we can omit this. |
| nctnico:
--- Quote from: mawyatt on July 25, 2023, 02:22:21 pm ---One of the benefits (not usually mentioned) of these LCR meters is the lower Z ranges, like DCR at 1 Ohm and ACR 3 Ohm ranges, where the DUT current can be as high as ~67ma. These ranges are below most quality DMMs like the KS34465A (100 ohms) and DMM6500 (10 ohms). --- End quote --- That statement may not be true as the 6.5 digit DMMs you mention have a lot higher accuracy compared to an LCR meter and you might be operating the LCR meter outside the range where it is most accurate when measuring low resistance values. |
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