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Article #254Re: Best way to power array of LEDs?
From: C what I mean
Date: Sat, 05 Oct 2002 14:30
Date: Sat, 05 Oct 2002 14:30
40 lines
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2738 bytes
My Bad! There are at least 45 postings.. not 30..... Sorry.. I forgot to count. Keep it up.. I have actually read every single one... well, most of every single one... :o) "DaveC" <anon@example.net> wrote in message news:0001HW.B9C26E7400A7161B165FEAC0@news.covad.net... > Have assembled an array of LEDs for use as a 3rd brake light in my car, > configured as 4 rows of 9 jumbo LEDs, as of yet unwired. Of course the power > supply will be 12 volts nominal (13.8 volts, maximum). > > My options, as I see them, are: > 1) Wire individual resistors to each LED based on its operating current > 2) Wire each row in parallel and connect one resistor based on operating > current for 9 LEDs > 3) Install voltage regulator to output voltage (ie, 1.3 volts?) to operate > all LEDs in parallel. > > What is the best method to power these from an intermittent (whenever I press > the brake pedal) power source? > > Other options for powering this array? > -- > Note that my return address is corrupted in an attempt to reduce spam. If you > choose to e-mail me, please correct my address as described below. > > Thanks, > Dave > --- > Dave Carpenter > Sound Logic > voicebox@d8n8a8i.com > > Remove the numbers to reply via e-mail >
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 112d1e,4ef4c9d4aea85e1f X-Google-Attributes: gid112d1e,public X-Google-Thread: 1131b0,4ef4c9d4aea85e1f X-Google-Attributes: gid1131b0,public X-Google-Thread: 10d137,4ef4c9d4aea85e1f X-Google-Attributes: gid10d137,public X-Google-Thread: 103407,4ef4c9d4aea85e1f X-Google-Attributes: gid103407,public X-Google-Thread: 1118be,4ef4c9d4aea85e1f X-Google-Attributes: gid1118be,public X-Google-ArrivalTime: 2002-10-05 07:30:25 PST Path: arc1-ca.pugleaf.net!archiver1.google.com!news1.google.com!newsfeed.stanford.edu!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!wn11feed!wn6feed!worldnet.att.net!204.127.198.204!attbi_feed4!attbi.com!sccrnsc02.POSTED!not-for-mail From: "C what I mean" <"NO SPAM"@yahll.com> Newsgroups: sci.electronics.components,sci.electronics.design,alt.engineering.electrical,aus.electronics,sci.electronics.repair References: <0001HW.B9C26E7400A7161B165FEAC0@news.covad.net> Subject: Re: Best way to power array of LEDs? Lines: 42 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 Message-ID: <4ICn9.46867$xI5.9321@sccrnsc02> NNTP-Posting-Host: 12.246.190.42 X-Complaints-To: abuse@attbi.com X-Trace: sccrnsc02 1033828224 12.246.190.42 (Sat, 05 Oct 2002 14:30:24 GMT) NNTP-Posting-Date: Sat, 05 Oct 2002 14:30:24 GMT Organization: AT&T Broadband Date: Sat, 05 Oct 2002 14:30:24 GMT