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Old 3rd Dec 2017, 3:16 pm   #4
ukcol
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Join Date: May 2003
Location: Harlaxton, Lincolnshire, UK.
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Default Re: Should an electrolytic capacitor have measurable resistance?

A good electrolytic will have a small leakage current. The AVO 8 uses a 15 volt battery on the ohms * 100 range but i don't know what the terminal PD is on that range. However if we assume a terminal PD of 10 volts and your meter reading of 40K ohms (a bit over) this equates to a leakage current of 0.25mA, that is not a lot. As has been pointed out above the leakage will be greater if the capacitor is connected reverse polarity.

That method of testing an electrolytic capacitor doesn't tell you anything useful I'm afraid.
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