| Products > Test Equipment |
| Your Experience on LCR Meter DER EE DE-5000 / Hantek 1833C |
| << < (5/7) > >> |
| 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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