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Old 30th January 2009, 06:11 PM   #1
diyAudio Member
Join Date: Oct 2007
Default ESR meter - Can someone please take a look at the schematic?


I built this one, its a simple ESR meter for testing elyts.

Im not sure in wich unit the caps are writen out in.
All the values are there im not just sure if it is in
pF nF or uF..

Schematic and PCB files on the bottom of the page.

Anyone built something like this?
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Old 30th January 2009, 07:14 PM   #2
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Join Date: May 2002
Location: Bavaria (south of veal sausage equator)
I built this one, its a simple ESR meter for testing elyts

All the values are there im not just sure if it is in pF nF or uF..
I guess You will still build it, right?

Cap values of schematic must be F.

No, I did not (yet) build nor do have an ESR-Meter but I`m sure this is a very handy (must have) tool for troubleshooting, in particular for aged equipment. I have to get one myself.
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Old 1st February 2009, 08:16 PM   #3
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Join Date: Oct 2007
Thanks! I guess it is normaly in uF when no unit is
given. This meter works really well if you have a
good uV analog meter panel.

I allready found 2 caps with high ESR.
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