From: Lizard Blizzard
Subject: Re: Parallel LEDs calculation
Date: Mon, 09 Sep 2002 07:00:48 -0700
X-Mailer: Mozilla 4.79 [en] (Windows NT 5.0; U)
Martin Riddle wrote:
> Actuall you should derate the resistors according to temperature.
> If this is a 85c enviroment, then the resistors should be derated.
> Check the ohmite web site, the info is in their catalogs.
Of course derating the resistors still doesn't take into account the
possibility that the series string of LEDs might get shorted, and the
full voltage would be across the resistor(s). If so, then plan for the
fault by either using higher power resistors (E^2/R) or else flameproof
fusible resistors or a fuse.
----------------(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~;
(ii) there is no such word as ~her's, our's, their's, your's~.
Confusions: it's = it is or it has (not 'belonging to it'); correct
uses are ~it's here~ (= it is here); ~it's gone~ (= it has gone);
but ~the dog wagged its tail~ (no apostrophe).
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