The original design used one of the outputs for feedback.
There was no additional winding specifically for fb.

-Neil.




> -----Original Message-----
> From: pic microcontroller discussion list
> [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of LARRY REYNOLDS
> Sent: Wednesday, February 26, 2003 2:57 PM
> To: PICLIST@MITVMA.MIT.EDU
> Subject: Re: [EE]: Identifying a mystery inductor/transformer
>
>
> PicDude wrote:
> >
> > <snip>... so I'm not sure why I have 5 windings instead of 4.
>
> Switcher/Regulator Feed-back winding???
>
> Larry
>
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