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Your Experience on LCR Meter DER EE DE-5000 / Hantek 1833C

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mawyatt:
Here's something that folks might find interesting.

https://www.eevblog.com/forum/testgear/de-5000-lcr-tl-21-mod/msg4754858/#msg4754858


If you deal with SMDs, the modded TL-21 with BNC connectors and a SMD fixture like shown works really well.

Best,

NoMoreMagicSmoke:

--- Quote from: TimFox on May 18, 2023, 05:46:41 pm ---The high-frequency behavior of resistors depends greatly on the internal construction.
For old-fashioned A-B carbon composition resistors, the talc grains mixed with the carbon particles "short out" the carbon capacitively at high frequency, so that the equivalent parallel resistance is surprisingly low.

--- End quote ---

Good point. I should have specified the type of resistors. I tested my ET432 with a precision metal film resistor, which measures perfect on a DE-5000 at 100KHz, but is 1.8% low at 100KHz on the ET432.

NoMoreMagicSmoke:

--- Quote from: hexreader on May 18, 2023, 03:11:35 pm ---1 Megohm resistor shows as about 500k at 100kHz serial mode

"X" shows as about 450k - maybe you need to add the two together? - wild guess - I have no understanding

Parallel mode shows about 900k Ohms with 100kHz

100Hz gives probably correct value of 980k Ohms in any mode

Hantek 1833C

--- End quote ---

What type of resistor did you test? As others have said, a carbon resistor dropping is expected, but a metal film should not have an appreciable drop at 100KHz.

My ET432 has all sorts of problems in the MOhm range as well. I suspect this is because the highest range resistor internally is only 100K, whereas a meter like the DE-5000 includes a 1MOhm range resistor.

hexreader:

--- Quote from: NoMoreMagicSmoke on May 20, 2023, 02:35:05 am ---
What type of resistor did you test? .


--- End quote ---
Cheap nasty 0.25 Watt 5% resistor from a bundle offer many years ago

I have no idea what the construction would be

I have no other high value resistors to try

I have low expectations of the Hantek LCR meter and the resistor. Both are good enough for hobby use  :)

NoMoreMagicSmoke:

--- Quote from: hexreader on May 20, 2023, 07:11:54 am ---
--- Quote from: NoMoreMagicSmoke on May 20, 2023, 02:35:05 am ---
What type of resistor did you test? .


--- End quote ---
Cheap nasty 0.25 Watt 5% resistor from a bundle offer many years ago

I have no idea what the construction would be

I have no other high value resistors to try

I have low expectations of the Hantek LCR meter and the resistor. Both are good enough for hobby use  :)

--- End quote ---

So probably a carbon resistor. Ok. A dropoff in resistance is probably normal for that resistor then.

Thanks for testing though!!!

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