From: Lizard Blizzard
Subject: Re: Best way to power array of LEDs?
Date: Fri, 04 Oct 2002 14:08:54 -0700
References: <0001HW.B9C26E7400A7161B165FEAC0@news.covad.net> <firstname.lastname@example.org>
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Keith Wootten wrote:
> My bicycle rear light is an array of 50 LEDs from RS components which
> are arranged in a series/parallel configuration with a nominal Vf of 9V5
> IIRC. Using two small paralleled 5V lamps (can't remember the type -
> selected from a junk box) the current swings 2:1 for a 14V-10V supply.
Do you mean in parallel with the LEDs or the lamps are in parallel with
each other, then in series withg the LEDs. In either case, why do you
need 50 LEDs?? You oughta look like a christmas tree!
> In my case, it's also a useful low battery warning - the filament lamp
> goes out long before the LEDs.
----------------(from OED Mini-Dictionary)-----------------
PUNCTUATION - Apostrophe
Incorrect uses: (i) the apostrophe must not be used with a plural
where there is no possessive sense, as in ~tea's are served here~;
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Confusions: it's = it is or it has (not 'belonging to it'); correct
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