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Old 18th July 2020, 10:15 AM
Chris Chris is offline
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Default pre 2 power supply

I have a couple of 120uf capacitors that could possibly could be used in the pre 2 power supply, would 120uf be too much where 100uf is specified?

Chris.
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Old 18th July 2020, 04:17 PM
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pre65 pre65 is offline
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Default Re: pre 2 power supply

I'd say you were quite safe, and probably within tolerances.
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Old 18th July 2020, 04:17 PM
John Caswell John Caswell is offline
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Default Re: pre 2 power supply

Hi Chris,
No not a problem. Because the Pre PSU's have solid state rectification they do not suffer from the "hot switching" syndrome of valve rectifiers, although you have to bear in mind that if the capacity gets too high then the initial charging current from "cold" could exceed the rectifier and fuse rating
As 120f is only 20% up on 100F and capacitors are often +50% -20% it does not produce a problem.

John
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Old 18th July 2020, 04:27 PM
Chris Chris is offline
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Default Re: pre 2 power supply

Thanks both for your reply and help.

Chris.
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