UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Should an electrolytic capacitor have measurable resistance?

Mooly · 4th Dec 2017, 9:10 pm

Can I also make another point... the high (15 volt) terminal voltage the AVO uses on its high ohms ranges can in certain circumstance degrade the noise figure of certain sensitive RF devices if applied in such a way that it causes reverse breakdown.

It's non destructive and the device will appear 'normal' but possibly with an impaired noise figure.

I have no experience of the 'magic box' testers that check all and everything, but again, depending on what appears at the test terminals the user should be aware of possible device degradation if certain conditions are met.

4th Dec 2017, 9:10 pm	#22
Mooly Octode Join Date: May 2011 Location: Lancashire, UK. Posts: 1,351	Re: Should an electrolytic capacitor have measurable resistance? Can I also make another point... the high (15 volt) terminal voltage the AVO uses on its high ohms ranges can in certain circumstance degrade the noise figure of certain sensitive RF devices if applied in such a way that it causes reverse breakdown. It's non destructive and the device will appear 'normal' but possibly with an impaired noise figure. I have no experience of the 'magic box' testers that check all and everything, but again, depending on what appears at the test terminals the user should be aware of possible device degradation if certain conditions are met.