On 03/31/2021 20:06, Lee Hart via EV wrote:
Alan Arrison via EV wrote:
Those LED's must not be very bright. 13V x .03A= .39W
Maybe you meant 300ma?
I dunno. Modern LEDs can be *very* bright at 30ma!
Lee
Agreed that a single LED with 30mA is very bright. However a tail light
is not a single point of light. It's an array with a bunch of LEDs in a
series / parallel arrangement of some sort. And for a trailer tail
light (what the original mention of 30mA was talking about) there are
going to be at least two of those arrays, so each one is only seeing 15
mA That makes each LED getting far less than 30mA. Granted that for a
tail light or clearance light, it does not need to be all that bright.
Turn signals and brake lights are of course quite a bit brighter.
--
73
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Jim Walls - K6CCC
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AMSAT Member 32537 - WSWSS Member 395
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