Hi,

maybe I'm wrong but also a term "choke" maybe of interest. I would look
around the homepages of VFD manufacturers, which actually have both RF
chokes and dU/dt ones. I just tested e. g. www.mitsubishi.de and found
Funkents=F6rfilter bzw. Zwischenkreisdrossel further Drehstrom-Netdrossel
which could help you.

Regards,
Imre

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On Fri, 16 Jul 2004, Wouter van Ooijen wrote:

> > Is it possible to raise the switching frequency? That's huge!
>
> I am not involved in the design, just in the hunt. As far as I
> understood the inductor is to smooth the current into the capacitor
> before the switcher itself. This current is itself switched. Not
> chopped, just switched on/off at certain moments of the sine.
>
> Wouter van Ooijen
>
> -- -------------------------------------------
> Van Ooijen Technische Informatica: www.voti.nl
> consultancy, development, PICmicro products
>
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