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RE: LED rules of thumb

To: <ukha_d@xxxxxxx>
Subject: RE: LED rules of thumb
From: "Dr John Tankard" <john@xxxxxxx>
Date: Tue, 17 Sep 2002 15:06:49 +0100
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Reply-to: ukha_d@xxxxxxx

> Vr = resistor forward voltage (nominally 2.4 but check the > spec sheet) 2.4 for Vr is a bit high, typically its in the region 1.9-2.2, the blue ones tend to be higher (I don't know why) but I fully agree look at the spec sheet, also note that the light output from a led is non linear, so unless you really need a bright led there in not much point going much beyond the spec for If Typ. John

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