Products > Test Equipment
Your Experience on LCR Meter DER EE DE-5000 / Hantek 1833C
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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