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Article #2321Re: Supply for LV lighting application?
From: Russ
Date: Mon, 17 Mar 2003 09:58
Date: Mon, 17 Mar 2003 09:58
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2494 bytes
"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.
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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 01:54:20 PST From: "Russ" <russell@remove.thehovel.net> Newsgroups: sci.electronics.design,sci.electronics.misc,alt.engineering.electrical,aus.electronics Subject: Re: Supply for LV lighting application? Date: Mon, 17 Mar 2003 20:58:14 +1100 Organization: Web One Internet http://webone.com.au Lines: 22 Message-ID: <3e759b34@iridium.webone.com.au> 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> NNTP-Posting-Host: iridium.webone.com.au X-Trace: merki.connect.com.au 1047894859 1098 203.30.194.14 (17 Mar 2003 09:54:19 GMT) X-Complaints-To: abuse@connect.com.au NNTP-Posting-Date: 17 Mar 2003 09:54:19 GMT X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2600.0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 X-Original-NNTP-Posting-Host: dial-ctt01-69.webone.com.au X-Original-Trace: 17 Mar 2003 20:53:56 +1000, dial-ctt01-69.webone.com.au Path: arc1-ca.pugleaf.net!archiver1.google.com!news1.google.com!newsfeed.stanford.edu!logbridge.uoregon.edu!arclight.uoregon.edu!enews.sgi.com!news.xtra.co.nz!newsfeeds.ihug.co.nz!ihug.co.nz!usenet.net.nz!news.iprolink.co.nz!news.syd.connect.com.au!iridium.webone.com.au