Where to buy good LED lights?

S

skipnsb

Filing Flight Plan
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May 18, 2009
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skipnsb
I need good quality bare LED lights, singles for annunciators, replacement style for instruments that come with screwbase incandescent bulbs, and some multiples for ceiling lamp/courtesy lights? Are there any industry standards for these? Thanks Skip
 
skipnsb said:
I need good quality bare LED lights, singles for annunciators, replacement style for instruments that come with screwbase incandescent bulbs, and some multiples for ceiling lamp/courtesy lights? Are there any industry standards for these? Thanks Skip
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One or two companies are making LED replacements for many standard lamp bases/sizes. Most but not all have built in dropping resistors or regulators to allow drop-in replacement. There are a few issues to consider though. One is that virtually every example I've seen emits most of the light axially and this would be a problem in many applications such as post lamps and anywhere else that light is collected from lateral emissions of the lamp. Color can be a concern as well. Some of the white ones use a combination of three discrete wavelengths and placing such a lamp behind a colored filter may result in little or no output and there may be a color shift. Similarly putting a red LED behind a green filter won't work at all and there are even cases where a red LED won't pass much light through a red filter if the filter has a fairly narrow passband that doesn't match the LED's wavelength. Finally, there can be issues with dimming. The LEDs usually draw considerably less current than the incandescent lamps they replace so a dropping resistor might not drop much if all the lamps connected to it are changed to LEDs and with a mix of LEDs and incandescent lamps they might not track each other very well as they are dimmed.
 
gismo said:
One or two companies are making LED replacements for many standard lamp bases/sizes.

Lance, do you have links to some of these companies? I'm putting lights on my Fly Baby and want low draw LEDs. I've found the drop-in bulbs for the grimes position lights that aircraft spruce sells but they are kind of pricey. Can't seem to determine who is making them. Been searching all over the web.
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some discussion about LEDs on RV.NET as some of us strive to reduce our electrical loads... generally a lot of junk out there seems to be the consensus so far.
 
I've purchased some stuff from superbrightleds.com . Got them for the motorcycle, but there seems to be a whole collection of different style bulbs and power units, etc.
 
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