Tweezers for low-impedance capacitors.

[tigr]

Hi,
The measurement of low-impedance capacitors has always been of great interest in the environment of electronics lovers. Let's see how four meters measure low-impedance capacitors.
Rubycon ZLH Low Impedance 1000uF/35v.Max. impedance(100kHz)-0,017Ohm.
http://www.rubycon.co.jp/EN/CATALOG/E_PDFS/ALUMINUM/E_ZLH.PDF
Russian tweezers HB-14.

[BravoV]

Are you asking which meters of yours is the most accurate one ?

[tigr]

Are you asking which meters of yours is the most accurate one ?

No, I just restore justice.

[tautech]

Russian tweezers HB-14 

Google can't find a source.

Link please.

[kirill_ka]

Russian tweezers HB-14 

Google can't find a source.

Link please.

http://www.rlc-esr.ru/
http://rlc-esr.ru/index.php/pintset-nv14 (Russian-only)
I have an older model. Nice thing, really.

[tautech]

Russian tweezers HB-14 

Google can't find a source.

Link please.

http://www.rlc-esr.ru/
http://rlc-esr.ru/index.php/pintset-nv14 (Russian-only)
I have an older model. Nice thing, really.

http://rlc-esr.ru/index.php/kupit
For ~$122 these are very well priced WRT the Canadian smart tweezers ST5.
Need to compare specs .......

[Shock]

There is at least half a dozen on the market, if you stuff a $20 Atmel LCR clone into a small enough package you can own you very own brand as well.

http://www.smarttweezers.org/
http://www.lcrresearch.com/pro1/

[tigr]

Capacitor Rubycon MBZ Ultra Low ESR for PC mother board  3300uF/6,3v.Max.ESR-0,012Ohm.
http://www.tetrix.com/products/32470/MBZ.pdf

[tigr]

Let's see how it measures the capacitors in the circuit. I have already cited this example. The two capacitors are 2200uF 50V in parallel.

[tigr]

First conclusions.
Incorrect measurement of the capacitance of capacitors. By lowering the readings when measuring in the circuit, creates a false impression of loss of capacitance.
Incorrectly measures the ESR of low-impedance capacitors.
Raising ESR readings several times, creates a false impression of the suitability of the capacitor, hinders the correct evaluation of the ESR of new and used capacitors.

[tigr]

http://www.lcrresearch.com/pro1/

I remember once suggested to the LCR Research,to measure the ESR of a polystyrene capacitor K71-7 0.5uF/250v.A even better 2 in parallel.
HB-14
K71-7 1uF/250v 1%.
ESR-0,000 Ohm.

[Shock]

[tigr]

For the sake of interest, I measured with my tweezers 200kHz. I got about 0.003 Ohm.

[BravoV]

For the sake of interest, I measured with my tweezers 200kHz. I got about 0.003 Ohm.

Yep, very interesting, cause the meter shows current at 49 uA, while you're speaking resistance. 

I guess you're confused between Ampere and Ohm.

[tigr]

Yep, very interesting, cause the meter shows current at 49 uA, while you're speaking resistance. 

I can very clearly see that you have never made an analog ESR meter.
 
There the scale near zero is strongly compresed.The first mark  of the  scale  is 0,005Ohm.
This is the payment for the most complex measurements.
Look deeper.
 

[tigr]

Tables ESR, stored in the memory of Tweezers HB-14.
For standard aluminum capacitors and LOW ESR.
The ESR is measured at a frequency of 100 kHz.

[tigr]

Let's see how the actual ESR tables works. The standard aluminum capacitors.
Bad capacitor.1000uF 35v.
-5.
Shows how still normal.
Bad capacitor.2700uF 6,3v.LOW ESR.
Abnormally LOW ESR.
-22.
Shows how still normal.