[ARC5] Capacitor Tests

[Robert Eleazer]

Today I obtained yet another discarded stereo amp, with a nice big power transformer.  I also took two big caps out of it, rated 8200 uf at 71V.  Unfortunately there is not much else in there that is of much practical use, other than the screws and three 78 series regulators. 

I have assumed in the past that if you charge up a cap to a appreciable portion of its rated voltage and it is still holding a large percentage of that charge days or weeks later it is a good cap.  However I also have a nice new unused electrolytic cap that will not hold a charge of 40VDC that well.

Is this a good way to measure if electrolytic capacitors are healthy?

Thanks,

Wayne
WB5WSV      

---
This email has been checked for viruses by AVG.
https://www.avg.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/arc5/attachments/20190108/80a56d58/attachment.html>