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  1. caps

    Smart LCR tweezers LCR Pro1-Russian RLC tweezers HB-14

    This is claimed by all and sundry, but nowhere is there any evidence of this. Let's not repeat these arguments, but rather give specific examples where it is impossible, in your opinion, to measure the capacitor parameters in-circuit. Describe more specifically these situations.
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    Smart LCR tweezers LCR Pro1-Russian RLC tweezers HB-14

    I showed this patent as an example to answer your question about the influence of other components in in-circuit measurements. This patent, of course, is not related to tweezers.
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    Smart LCR tweezers LCR Pro1-Russian RLC tweezers HB-14

    https://patentimages.storage.googleapis.com/a6/e6/4d/03566a4d6af76b/US6356086.pdf
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    Can I mix 3 different brands of electrolytic capacitors?

    To check the electrolytic capacitors, you can use a Chinese transistor tester. He has a Vloss function (leakage).
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    Smart LCR tweezers LCR Pro1-Russian RLC tweezers HB-14

    They have approximately the same accuracy, much higher than the accuracy of this resistor. I can say one thing. Three times the difference is a disaster. One more software flaw in blue tweezers is clearly visible, this is the need for constant calibration. The huge difference in the measurement...
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    Smart LCR tweezers LCR Pro1-Russian RLC tweezers HB-14

    Watch this moment carefully in the video. 6.48-6.58. Measured SMD resistor 0 Ohm. Its name is a resistor-jumper. The measurement results differ three times. So, it is absolutely not clear which of the tweezers can be trusted.
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    Smart LCR tweezers LCR Pro1-Russian RLC tweezers HB-14

    It is clearly seen that Russian tweezers have big problems with measuring ceramic capacitors. This is not a problem of the influence of other components, it is a quality problem of in-circuit measurements of these tweezers. There should not be any special restrictions in the measurement of these...
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    Smart LCR tweezers LCR Pro1-Russian RLC tweezers HB-14

    Two Russian tweezers measure ceramic capacitors in-circuit. The measurement results are complete nonsense. :oops:
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    KOOCU-DT9205A Digital Multi Meter

    Check the battery again. If the alternating voltage is not normal, try to adjust it with a potentiometer on the board.
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    Dell 2408WFPb - What to replace?

    With this simple fixture, you can practice on capacitors. There is a table of leakage of aluminum capacitors. http://www.electrojumble.org/reforming.htm
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    Dell 2408WFPb - What to replace?

    This is not necessary. Maybe the ESR will increase, very little. But this is enough to create problems. A lot of trouble is caused by leakage of capacitors. You can check with an analog multimeter. But in many cases, the leakage manifests itself at an operating voltage. You can independently...
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    Surface mounted component diode / rectifier identification

    This is a 150µF polymer capacitor. If you had a C / ESR meter, the component identification problem would be solved very quickly.
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    Low Battery Voltage

    Here is a similar situation.
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    Low Battery Voltage

    Power supply, below. It seems to me, a large capacitor on the left, you need to check.
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    Regulating output of a 5252f?

    Administrators can remove this message if there is something wrong.
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    Regulating output of a 5252f?

    There is a lot of information on LED lamps. https: slash slash fimopico dot pw slash yx8018.html [Mod edit: link removed, everybody use that site at their own risk. Thanks @Audioguru ]
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    Smart LCR tweezers LCR Pro1-Russian RLC tweezers HB-14

    73's de Edd To measure the capacitance less than 1 pF, it was necessary to connect two capacitors 1 pF in series. Very good. 0.5124pF.
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    ESR. New parameter for polypropylene capacitors.

    http://www.pakton.com.au/assets/data_sheets/PowerFilmCapacitor.pdf
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    Smart LCR tweezers LCR Pro1-Russian RLC tweezers HB-14

    I will give a good example, why else besides small capacitors, we need this ESR 100kHz meter. Most homemade ESR meters have a maximum upper limit of 20-30 Ohms. In this ESR meter, the maximum distinctive value is 300Ohm. Capacitor 3,3uF /450v. Capacitance is almost normal, but the ESR is very...
  20. caps

    Smart LCR tweezers LCR Pro1-Russian RLC tweezers HB-14

    If I understood correctly, you meant this. 0.0000pF
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