Sorry,

Misunderstood.  I've always thought ripple to be the AC component that
is centered around the desired DC voltage.

John


Wireless CAN with the CANRF module.
http://www.autoartisans.com/documents/canrf_prod_announcement.pdf
Automation Artisans Inc.
Ph. 1 250 544 4950


> -----Original Message-----
> From: pic microcontroller discussion list
> [mailto:PICLIST@MITVMA.MIT.EDU] On Behalf Of Olin Lathrop
> Sent: Friday, May 31, 2002 12:32 PM
> To: PICLIST@MITVMA.MIT.EDU
> Subject: Re: [PIC]: Caps select for PSU
>
>
> > Using Olin's formula,  it's the difference between the
> desired voltage
> > and the peak voltage from the transformer.
>
> That's not what I said at all.  Ripple is the differnce
> between the low and
> high limits of the rectified voltage due to the power line cycle.
>
>
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