Author Topic: Using the DE-5000 to measure stray inductance of low-value wirewound resistors  (Read 1126 times)

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Offline cvancTopic starter

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Hi all-

Anyone have experience using the DE-5000 to measure the stray inductance of low value wirewound emitter resistors?

I've got a few different emitter resistors here and will post some measurements, but I'm curious if others have done this and found it A) accurate and B) useful?

Thanks.
 

Offline chronos42

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Hi,

that works well with the DER EE 5000.

Set the meter to LS/LP  with the blue LCR AUTO key, then with the SER/PAL key to LS and D/Q/ESR/phi to ESR. Set the frequency to 100kHz.
 

Offline coppercone2

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I think the DE-5000 has accuracy specs in the manual relating to the accuracy of measurements at particular impedances. I don't recall if it has accuracy specs of the parasitics though.

Secondary Parameters Accuracy in manual has formulas for accuracy. would be nice if someone bothered to make a graph
« Last Edit: October 15, 2018, 08:09:31 pm by coppercone2 »
 

Offline evava

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Anyone have experience using the DE-5000 to measure the stray inductance of low value wirewound emitter resistors?


I have experience using my DE-5000 to measure stray inductance of low value wirewound resistors, but it is not pleasing experience and my DE-5000 behaves exactly the same way as in this post:
(sorry for cross linking) https://www.eevblog.com/forum/testgear/strange-behaviour-with-my-de-5000/msg897162/#msg897162.

So  :-//
I think there are better meters for this task.
 

Offline coppercone2

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he said he had problems with the kelvin clips. I noticed this too and I had to resolder my alligator clips.

I might do experiments on mine in a few weeks, but I have nothing good to compare it to.
I can actually use the formula to calculate error based on the manual.

oh yea, this thing also  got funky with me before from batteries IIRC.
 


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