Re: [EE] solid aluminum caps on 60hz

Spehro Pefhany <[email protected]>
Newsgroups gmane.comp.hardware.microcontrollers.pic
Message-ID <[email protected]>
Hi, MS:-

Well, the current can’t be any higher than the short-circuit current of the transformer. Maybe you can measure that to get some clarity. Compare with your rectifier ratings. There will be a half-cycle surge rating, or something of that ilk.

I doubt that it’s an issue unless your transformer is massively overrated or you are using wimpy rectifiers, but that’s no guarantee. 

Best regards, Spehro Pefhany 

> On May 15, 2025, at 8:11 AM, madscientistatlarge <[email protected]> wrote:
> 
> I'm building a small (2A 12v) power supply off of a transfomer so 60Hz.  Is using the solid caps a problem?  I understand they have a reduced impediance and am worried about the power on current initially charging the cap and during each half cycle when the caps charge back up.  Thank you.
> 
> piclist

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