http://www.pat2pdf.org/patents/pat20050248323.pdf


On 11 Jun 2006 at 18:22, Olin Lathrop wrote:

> Martin K wrote:
> > "I've used this technique, and Dave Tweed and I have a patent pending
> > on its application to various aspects of power factor corrected power
> > supplies. Your battery charger would likely not be infringing ;-) "
> >
> > What is the patent application number?
> 
> I don't know.  If it's been made public then it should be too hard to find I
> would imagine.  If not then an application number wouldn't help anyway and
> it may not be a good idea for me to go into details at this stage.
> 
> One part of the technology is described at http://www.embedinc.com/pfc.  The
> other part is again implicitly calculating output load current and adjusting
> the PFC to that in a way that is now confused by the output ripple that is a
> necessary biproduct of the PFC function.
> 
> 
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