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Article #2306Re: Supply for LV lighting application?
From: Klaus Vestergaard Kragelund
Date: Mon, 17 Mar 2003 16:10
Date: Mon, 17 Mar 2003 16:10
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2569 bytes
"Russ" <russell@remove.thehovel.net> wrote in message news:3e759b34@iridium.webone.com.au... > > "Richard Crowley" <rcrowley7@xprt.net> wrote in message > news:v7alqfnnv6hfcf@corp.supernews.com... > > "Klaus Vestergaard Kragelund" wrote > > > I guess mains flicker would be a major problem in the USA, don't know > > about > > > New Zeeland/Australia. In Denmark it happens were seldomly in residental > > > areas. > > > > Why? Mains frequency is 20% HIGHER in USA > > > > PAL video flicker is quite noticable to many visitors from USA > > In production circles, we call that "Film Look" :) > > Seriously, given the thickness of the filament in QH lamps and therefore how > slowly they heat up and cool down, I'd be very surprised if you could see AC > flicker. Certainly nothing like fluorescent flicker. > > Russ. > OK - maybe my translation was wrong - with mains flicker I means surges/rise in the mains voltage that will last for a couple of seconds. Not frequency change which is irrelevant Cheers Klaus
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 112d1e,bb2f1d6cc718187b X-Google-Attributes: gid112d1e,public X-Google-Thread: 10d137,bb2f1d6cc718187b X-Google-Attributes: gid10d137,public X-Google-Thread: 103407,bb2f1d6cc718187b X-Google-Attributes: gid103407,public X-Google-Thread: 107cee,bb2f1d6cc718187b X-Google-Attributes: gid107cee,public X-Google-ArrivalTime: 2003-03-17 08:08:42 PST Path: arc1-ca.pugleaf.net!archiver1.google.com!news1.google.com!newsfeed.stanford.edu!logbridge.uoregon.edu!newsfeed.icl.net!newsfeed.fjserv.net!colt.net!news.tele.dk!not-for-mail From: "Klaus Vestergaard Kragelund" <klauskvik@hotmail.com> Newsgroups: sci.electronics.design,sci.electronics.misc,alt.engineering.electrical,aus.electronics References: <0001HW.BA977EAD001869E90E6B7920@news.covad.net> <TINca.5877$8b.679066@news02.tsnz.net> <3e7461fd$0$24706$edfadb0f@dread14.news.tele.dk> <Fz6da.6118$8b.720573@news02.tsnz.net> <3e74fff0$0$24678$edfadb0f@dread14.news.tele.dk> <v7alqfnnv6hfcf@corp.supernews.com> <3e759b34@iridium.webone.com.au> Subject: Re: Supply for LV lighting application? Date: Mon, 17 Mar 2003 17:10:34 +0100 X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2800.1106 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Lines: 36 Message-ID: <3e75f30a$0$24654$edfadb0f@dread14.news.tele.dk> Organization: TDC Internet NNTP-Posting-Host: 80.163.211.66 X-Trace: 1047917322 dread14.news.tele.dk 24654 80.163.211.66 X-Complaints-To: abuse@post.tele.dk