Products > Test Equipment
Sensitive LCR Meter Measurements
mawyatt:
A little EM analysis will show that all the case/ground/shield currents return thru the 2 end screws, make sure this connection is really good, one reason we prefer the 4 screw version!!
Best,
Martin72:
That's a pretty exciting thing, I like that. ;)
My 2nd edition of the power inductor checker has been set up and will soon be put into operation.
If it works as intended this time, I will publish it in the forum.
mawyatt:
--- Quote from: Martin72 on August 22, 2024, 06:09:43 pm ---The ST28006A test fixture arrived today and I'll be taking it home with me at the weekend.
Here are 2 pictures, from the outside the almost 270€ expensive ST version and mine from Aliexpress hardly differ.
But after opening it.... ;)
--- End quote ---
Martin,
Something doesn't look right here!!
The ST28006A image shows two end brackets to hold the cover. Each support bracket is bolted to the cover with 2 bolts, yet the image of the ST28006A only shows 1 set of dual bolts at one end of the cover, where's the other bracket attachment bolts at the other end???
Best,
mawyatt:
Here's some plots made with the IM3536 and the Custom Split-Kelvin SMD Fixture. These are 1% 2512 0.001 ohm and 0.01 ohm Resistors.
Edit: Added 50 and 100 Milliohms, later the High "Q" 100nF C0G Capacitor. Note the artifacts in the upper right of the -2 plot around 7.4MHz, likely due to a fixture/setup resonance.
Best,
Martin72:
I have now also taken the ST fixture home with me, before that I measured 3 capacitors at 100khz at work, once with the ST, then with my nameless one.
The results are congruent, which suggests that the “denser” structure of the ST does not yet play a role in the frequency.
Tomorrow I will do the same with the ET3503, but then of course also at 300kHz.
When I got home, I photographed both fixtures again, the pictures will be split accordingly due to the maximum number.
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