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Article #206Re: Best way to power array of LEDs?
From: Chris
Date: Wed, 09 Oct 2002 19:05
Date: Wed, 09 Oct 2002 19:05
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In article <3DA319B9.76A904E6@mfi.net>, "Michael A. Terrell" <terrell@mfi.net> wrote: > Here in Central Florida I see them replacing the red lights with LED >assemblies, but not the yellow or green. I have noticed a few already >have a couple bad LEDs and haven't been in use for a full year. Here in the Chicago 'burbs, they've started replacing railroad crossing lights with LEDs. Interestingly, some of them seem to have circuitry that ramps the brightness up and down slowly to more closely mimic an incandescent lamp. I know I saw this in Mount Prospect. I've seen others that have the abrupt on and off typically associated with LEDs. Chris
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 112d1e,4ef4c9d4aea85e1f X-Google-Attributes: gid112d1e,public X-Google-Thread: 103407,4ef4c9d4aea85e1f X-Google-Attributes: gid103407,public X-Google-Thread: 1131b0,4ef4c9d4aea85e1f X-Google-Attributes: gid1131b0,public X-Google-Thread: 10d137,4ef4c9d4aea85e1f X-Google-Attributes: gid10d137,public X-Google-Thread: 1118be,4ef4c9d4aea85e1f X-Google-Attributes: gid1118be,public X-Google-ArrivalTime: 2002-10-09 12:05:24 PST Path: arc1-ca.pugleaf.net!archiver1.google.com!news1.google.com!newsfeed.stanford.edu!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!sn-xit-03!sn-xit-01!sn-post-02!sn-post-01!supernews.com!corp.supernews.com!purch From: cpm724@hotmail.com (Chris) Newsgroups: sci.electronics.components,sci.electronics.design,alt.engineering.electrical,aus.electronics,sci.electronics.repair Subject: Re: Best way to power array of LEDs? Date: Wed, 09 Oct 2002 19:05:22 GMT Organization: Posted via Supernews, http://www.supernews.com Message-ID: <uq8vfjsb97jifd@corp.supernews.com> References: <0001HW.B9C26E7400A7161B165FEAC0@news.covad.net> <3D9D3A1F.97DB97B4@prontoREMOVETHISmail.com> <slrnapvghj.hah.don@manx.misty.com> <3DA03315.9506C177@prontoREMOVETHISmail.com> <W8ao9.64063$Pz.71865@rwcrnsc51.ops.asp.att.net> <antapg$mu7t$1@hades.csu.net> <3DA319B9.76A904E6@mfi.net> X-Newsreader: News Xpress 2.01 X-Complaints-To: abuse@supernews.com Lines: 13