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Old 25th Feb 2017, 12:53 am   #199
Techman
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Join Date: Nov 2009
Location: Lincolnshire, UK.
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Default Re: Restore a Beau Decca

Quote:
Originally Posted by PJL View Post
The larger can capacitors like this used in valve amplifier reservoir and smoothing positions typically have a ripple current rating of 300mA or more
Yes, but as you can see in your picture, this ONLY applies to the 'Red, Outer' reservoir part of the can. The 'Yellow, Inner' part is the smoother and has NO ripple rating after it. Ripple rating is not normally required once past the reservoir section of a power supply of this type.

I have a suspicion that those capacitors supplied by 'Just Radio' are actually good enough to handle ripple current. I suspect that it was just a problem in the past when 'some' capacitors had to be specially made to handle ripple current and were therefore always on the 'outside' of a 'multi-can' capacitor so as to aid cooling.

Other forum members 'in the know' may like to comment on these new, but high quality capacitors, as to whether this may be the case, although this is probably a topic for a separate discussion.
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