[volt-nuts] Finally got around to modifying my Fluke 845ab with LED's
robertg8rpi at virginmedia.com
Mon Sep 15 15:57:26 EDT 2014
I'm late to this thread, but have some experience. Several years ago I did
some research on replacing xenon flashlamps in a high speed fluorescence
instrument application. As the white LED candidates had phosphor coatings I
assumed (don't assume - guess ;-) that they would be too slow. It turned
out that they were significantly faster than the xenon lamps, with sharp
turn-off rather than the tail of the flashlamp.
So don't dismiss white LEDs for modulated applications.
On 11 September 2014 13:14, Chuck Harris <cfharris at erols.com> wrote:
> Hi Dallas,
> Let us know if it helps. Neons are very fast light sources, and
> can switch way faster than the CdS photo resistors can respond.
> A nice red/orange LED should work well with the original CdS
> photo resistors.
> -Chuck Harris
> Dallas Smith wrote:
>> After searching for the wave length of NE2 neon bulbs, I found that the
>> spectrum is
>> between 600-650nm. So I ordered red-org at 615nm. The white LED's I've
>> have do have
>> the characteristics you mentioned, Thank you for all your input, maybe
>> the results
>> will show some improvement.
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