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Article #171Re: Best way to power array of LEDs?
From: Nucharin W. Jansen
Date: Tue, 05 Nov 2002 22:48
Date: Tue, 05 Nov 2002 22:48
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use 12 voltage regulator ? and then adjust each strings manually to matching ( balance ) ? > The problem with that approach is that, as you put more in series, the > volt drop across the resistor reduces but the voltage variation due to > system volts looms up large. As a result, the brightness varies more > with system volts than single LED/resistor strings. > > As for power saving, that's like not using your parachute because it > will cause wear. I'm sure he isn't planning on driving around with > the anchors on all the time.
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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: 2002-11-05 15:00:11 PST Path: arc1-ca.pugleaf.net!archiver1.google.com!news1.google.com!newsfeed.stanford.edu!cyclone.bc.net!newsfeed.media.kyoto-u.ac.jp!triton.net!smallfeed.triton.net!news.michonline.net!uunet!bos.uu.net!nyc.uu.net!dca.uu.net!news.cscoms.com!not-for-mail From: "Nucharin W. Jansen" <tong@fanwap.com> 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, 06 Nov 2002 05:48:12 +0700 Organization: C.S. Communications Co. Ltd. Lines: 14 Message-ID: <3DC84AAC.1C929ECE@fanwap.com> References: <0001HW.B9C26E7400A7161B165FEAC0@news.covad.net> <3D9D32DE.93168158@autometer.de> <3d9d4dbc.3648371@news.cantech.net.au> NNTP-Posting-Host: dial-12.ras-31.bkk.c.cscoms.com Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Trace: news.cscoms.com 1036536500 63636 202.183.254.107 (5 Nov 2002 22:48:20 GMT) X-Complaints-To: abuse@cscoms.com NNTP-Posting-Date: Tue, 5 Nov 2002 22:48:20 +0000 (UTC) To: budgie <budgie@nowhere.cantech.net.au> X-Mailer: Mozilla 4.8 [en] (Windows NT 5.0; U) X-Accept-Language: en