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Old 29th Jul 2021, 5:04 am   #30
ricard's Avatar
Join Date: Mar 2006
Location: Lund, Sweden
Posts: 1,544
Default Re: Understanding Dual Can Electrolytics

As noted above, when it comes to PSU filtering caps, if they don't get warm and there's no excessive ripple, they're probably serviceable. But the question is, how much ripple is too much? Is there are rule of thumb for valve equipment, say 10% of the B+ voltage? Or is it better to temporarily connect a capacitor of similar value in parallel and observe if it makes any noticeable difference (improvement hopefully) to the audible hum?
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