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Old 14th Mar 2018, 6:40 pm   #16
G8HQP Dave
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Join Date: Sep 2008
Location: Solihull, West Midlands, UK.
Posts: 4,872
Default Re: Capacitors. Is physical size important?

It takes months (or perhaps a few years?) for an electrolytic oxide layer to deteriorate significantly, even when sitting on a shelf unused. Any leakage current will help preserve the oxide. Don't worry about a few hours or a few weeks at less voltage. The problem is most likely to show itself when a cap is re-used in a new circuit, having been recovered from a scrapped circuit which used it for years at a lower voltage.
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