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Reply-To: "fred bartoli"
From: "fred bartoli"
References: <3DAA0563.9040507@BOGUS.earthlink.net> <firstname.lastname@example.org> <3DAB88D3.6030301@BOGUS.earthlink.net>
Subject: Re: My flyback experiment is on the web
Date: Tue, 15 Oct 2002 11:29:07 +0200
X-Newsreader: Microsoft Outlook Express 5.00.2314.1300
Organization: Guest of ProXad - France
NNTP-Posting-Date: 15 Oct 2002 11:27:39 MEST
Chris Carlen a écrit dans le message :
> John Larkin wrote:
> > Snubbing a stepup converter like this will damp the ringing, which
> > makes the waveforms look nicer, but will generally reduce efficiency
> > by stealing energy from the initial rising edge. Since the energy
> > stored in parasitic capacitance must be dissipated somewhere, it
> > doesn't really matter where; so let it ring.
> > John
> Yeah, when I've thought about this, I came to the same conclusion. What
> is the point of a snubber? To make the waveforms look nice? That's not
> a worthwhile acheivement if it reduces efficiency and adds more parts,
> for really no useful gains.
The gain you have is in limiting drain voltage excursion, and also EMI
> Christopher R. Carlen
> Suse 7.3 Linux 2.4.10
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