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0 votes
2 answers
159 views

Capacitor decade box

I'm assembling a capacitor decade box. It will be used to tune circuits both in power & high frequency electronics (but, probably not GHz RF; with all the parasitics). So, I need it to be as low ...
Tempus Nomen's user avatar
0 votes
1 answer
777 views

What is the most reliable way to test old capacitors?

I have a few old electrolytic capacitors from an old system that have not been used in many years. I was thinking I might test them. What is the best way to reliably test these old caps?
alfredo2g90's user avatar
2 votes
1 answer
631 views

How to test a capacitor?

I've got a big 560 uF, 400 V capacitor and I've tested it with a meter and the capacitance is within spec, same the ESR and it has a vloss of 0.8%. So all seems fine but then I came across this video ...
user avatar
0 votes
2 answers
1k views

X2 capacitor. Test if failed open

I am looking at a small board in a paper shredder (it does not work). If I apply AC power and measure AC voltage across the X2 capacitor (I think it acts as a voltage dropper for the low voltage ...
Denis's user avatar
  • 35
1 vote
3 answers
5k views

Should a capacitor be considered functional if it's capacitance reading is correct?

There are many different ways to test capacitors. Using a capacitance meter, using a DMM and an analog meter. In general, is it safe to assume that a capacitor is considered functional if it's ...
Adrian Elder's user avatar