Flashlights and pocket knifes. Which is best?
Of all the flash lights I've got or had the kind I keep reaching for
when I need one is a decent priced Krypton Bulb AA battery powered one.
For me it is the right size, has a decent sized reflector, good focus,
and has the right amount of light for most of the jobs I do and with a
satisfactory light spectrum. Makes it a lot easier to read those small
numbers than the LED lights. Fits in a back pocket easily.
Buy a LED and have something like one of these and see which you wind
up using the most.
(Amazon.com product link shortened)88952284&sr=1-3-fkmr2
For some serious light, I like these,
And here's my pocket knife,
I've been there, done that, got the T-shirt.
Lately, LED ones have improved to the point where some now beat krypton,
xenon and halogen ones.
Keep an eye out - every several months, some of these LED lights keep on
leapfrogging each other. I am usually fairly happy with Dorcy and Inova
ones with high power LEDs. Also look for ones claiming at least 80
lumens, even though I consider the lumen figures to be often from the
A KPR3 higher power krypton bulb (usable in a in a 3-D-cell Mag), at
"full 4.5 volts" (usually not achieved), produces about 95 lumens - before
optics losses. It produces 44 lumens (before optics losses) at "nominal
voltage", assuming typical alkaline batteries "of average of condition
other than of batteries needing to be replaced", along with typical minor
voltage drops in conductors in the flashlight.
One thing about LEDs - their efficiency does not vary directly and
disproportionately with power input the way that of incandescents
(including halogens, kryptons, xenons) does.
Most 3-cell LED flashlights, including many Dorcy and most cheapie ones,
are good at "going into energy conservation mode" as the batteries weaken.
They will keep on trucking at reduced but largely usable output for many
times as much time as that at which an incandescent one gets as dim as an
- Don Klipstein ( firstname.lastname@example.org)
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