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Article #252Re: Best way to power array of LEDs?
From: Wouter van Ooijen (www.voti.nl)
Date: Sat, 05 Oct 2002 08:57
Date: Sat, 05 Oct 2002 08:57
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>The LM317 has a minimum current which may be greater than a single LED My datasheet says 10 mA. What kind of LED do you have in mind? >the biggest objection to using the LM317 is that they cost a buck or two The problem with discussions like this is that the original question did not state what the main objective should be: - minimal power use - minimal cost - most simple circuit - minimal brightness variation Wouter van Ooijen -- ------------------------------------ http://www.voti.nl PICmicro chips, programmers, consulting
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 112d1e,4ef4c9d4aea85e1f X-Google-Attributes: gid112d1e,public X-Google-Thread: 10d137,4ef4c9d4aea85e1f X-Google-Attributes: gid10d137,public X-Google-Thread: 1118be,4ef4c9d4aea85e1f X-Google-Attributes: gid1118be,public X-Google-Thread: 103407,4ef4c9d4aea85e1f X-Google-Attributes: gid103407,public X-Google-Thread: 1131b0,4ef4c9d4aea85e1f X-Google-Attributes: gid1131b0,public X-Google-ArrivalTime: 2002-10-05 01:56:48 PST Path: arc1-ca.pugleaf.net!archiver1.google.com!news1.google.com!newsfeed.stanford.edu!syros.belnet.be!news.belnet.be!transit.news.xs4all.nl!not-for-mail From: wouter@voti.nl (Wouter van Ooijen (www.voti.nl)) 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: Sat, 05 Oct 2002 08:57:01 GMT Organization: Van Ooijen Technische Informatica (www.voti.nl) Lines: 19 Message-ID: <3d9ea8f2.2968117@news.xs4all.nl> References: <0001HW.B9C26E7400A7161B165FEAC0@news.covad.net> <3d9d452f.4128065@news.xs4all.nl> <P0HAA5Jd3Un9EwWS@ntlworld.com> <3d9d5392.5143261@news.cantech.net.au> <anlb3a$lvte$1@hades.csu.net> NNTP-Posting-Host: a213-84-20-53.adsl.xs4all.nl X-Trace: news1.xs4all.nl 1033808206 15819 213.84.20.53 (5 Oct 2002 08:56:46 GMT) X-Complaints-To: abuse@xs4all.nl NNTP-Posting-Date: 5 Oct 2002 08:56:46 GMT X-Newsreader: Forte Free Agent 1.21/32.243