Peak ESR Meter wrong values HELP

[stj]

Re: Peak ESR Meter wrong values HELP

because your metering more than the cap, your also metering the chips!!
and probably some ceramic caps too.

[Shodan486]

Re: Peak ESR Meter wrong values HELP

that's quite a good idea, it seems, that you're right, I can easily measure a row of 4 caps of the same type, BUT - How come I cannost measure just a random 1500uF cap for, let's say a DIMM subsystem? That's just an example, VRMs can be measured, the little tiny ones are almost totally accurate, but unable to measure just a random cap for the AGP, that's another example...Share your knowledge anybody please, me desperate

[seanc]

Re: Peak ESR Meter wrong values HELP

What STJ says.

You've accurately described mine, it works fine thank you very much.

[stj]

Re: Peak ESR Meter wrong values HELP

you cant meter esr in circuit usually because there are other things in the circuit that mess with the readings.
specially with motherboards & psu's

for example, your 1000uf cap - was there 6 of them in the same area?
they are probably all connected together!

[Shodan486]

Hi

Link

This one is a big shit... I've bought this quite spectacular ESR meter, really didn't bother about the quality cause I trust english products, but maybe I am mistaken - It just simply shows strange values or doesn't even bother to detect some. Example: I am measuring a IN-CIRCUIT 16v 1000uF cap, and I get ESR 0.41 ohms and C is 6050uF ?!?!? Now what the hell? another story - I get a In Circuit / Leaky message, which means it can't measure the capacitance (still can't see the reason) or the cap is leaking...wel,l I don't think it's true when I KNOW the board is good and runs...I tested this item I am having in my hands for only few hours on quite a number of mobos and it acts the same... I only measured a 100uF cap with quite precise results (106.82uF) but the ESR was only 0.41 ohms...The very problem is the capacitance - Am I missing something or let's face it - It's broken.

BUT! It quite correctly works on OUT-OF-CIRCUIT state. I have bunch of rubycons 3300uf and 1800uf and those show their nominal state, some of them actually +/- 200uf, which I assume is still OK. Just any experiences would help, tomorrow I'll contact the seller and ask him the same thing here.