after diagnosing an old microcontroler board with lots of variousold caps i thought maybe an ESR meter to be a good tool for thetool box ? yes/no or a better tool for the boxso i googled for some ESR meter plans and settled on this one.... could someone comment on this design and whether it appears to begood/bad ?are there better plans to build ? are there any improvement modsthat should could be made ?thanks for any help,robb

If it's a really old piece of kit , and has electro caps in it, justreplace the lot. They guys who built it probably didn't know what ESR was in thosedays, it's only become obvious with modern smps IC's, needing miniohmsof ESRmartin

advise on ESR meter project ?

Dec 21, 2007 21 Replies

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Michael A. Terrell 18 years ago

If the OEM specifies their product at 100 KHZ, then that is the frequency needed for a proper test.

Service to my country? Been there, Done that, and I've got my DD214 to prove it. Member of DAV #85. Michael A. Terrell Central Florida

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Jean-Yves 18 years ago

there is nothing wrong with the poptronix version except that I have now a far better esr (in fact rlc) meter since... I still have the poptronic and it still works fine but I only have 10 leds to tell me the esr and now I have a 10000 count rlc meter...

the poptronic still has the frequency of 100khz for the test and I can only go to 25khz with the rlc meter.

Jean-Yves.

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