HID lights are more efficient than high-brightness LEDS. So, for a given
power input, there is less waste heat to dispose. It depends how much
light you want. It would take a lot of LEDS to be equivalent to a 35W
HID bulb; and you'd still get less light and more heat.
Duncan McF.
----- Original Message -----
From: irampil@notes.cc.sunysb.edu
To: europa-list@matronics.com
Sent: Wednesday, July 12, 2006 12:55 PM
Subject: Europa-List: LED Landing/Taxi lights
Hi Ron,
I may be totally out to lunch on this, but I believe the standard 100W
PAR bulb
puts out roughly double the mcd output claimed for the LEDs. Also,
high output
LEDs generally have stringent cooling requirements emphasizing airflow
close
to the emitter dies. Excessive heat can cause the rated life of the
LEDs to shorten
even to far less than regular incandescent bulbs, sometimes
dramatically
shorter.
It would be great if this LED system could be made bright and cool
enough.
It might be worth noting that LoPresti should be offering their HID
lighting
system with the new compact ballast at Oshkosk for $3-400. That is
also
a potentially nice solution, if one can design an appropriate mount!
Ron, are you going to Osh?
Ira N224XS
Many notches in my soldering iron from LEDs
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