A while ago, I purchased a flashlight from AES which uses four bright
white LED's to produce light. The color temperature of the light seems
to be very close to daylight, and the light, while extremely bright, is
also diffused, so it will brightly and evenly illuminate something
nearby (within a foot or two), but it's it's output drops rapidly beyond
that distance. It's small, and works great for trying to see around
inside equipment (the K2 for example), and I find it very helpful when
reading color bands on resistors and rf chokes, since the colors render
properly.
The flashight is sold under the name 'Lightwave', and it can be found on
page 148 of the Amateur Electronic Supply Fall/Winter 2004 catalog. It
may be available elsewhere, but I didn't look since the QTH is only
about 2 miles from AES store East of Cleveland. (a 'dangerously
tempting' place to live if one is a ham!) Their price is $29.99
73, Dale WA8SRA
Geoff, K6TFZ, wrote:
I have noted by my own observations and comments of others some confusion
as to exactly what colors are being observed on small parts, usually
resistors and RF chokes...Incandescent lighting seems to be the least
accurate for determining the correct colors, particularly yellows, oranges,
and browns. Many times I have used sunlight (if available) or sought out a
fluorescent lamp (cool white with at least 5200K temperature) to properly
interpret colors. When in doubt, I use a meter to confirm the value.
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