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Old 03-18-2014, 04:27 AM #1
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Default is it possible to build a good ciruit from a 9 led puck

I seen all these tutorials on taking a pcb puck out of a 9 led flashlight and turning it in to a decent driver for a laser diode my question is this bull or can it be done and if so can some one show me a set of pics on how to do it


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Old 03-18-2014, 02:06 PM #2
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Default Re: is it possible to build a good ciruit from a 9 led puck

All the 9 LED flashlights that I have seen (cheap little $2-$3, running 3 AAA batt.s) don't have drivers. They just series-parallel the diodes,,, ,,, So, NO.
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Old 03-18-2014, 08:24 PM #3
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Default Re: is it possible to build a good ciruit from a 9 led puck

If you give us some pictures of your LED "driver" we might be able to help you!

Jim
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Old 03-19-2014, 12:41 AM #4
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Default Re: is it possible to build a good ciruit from a 9 led puck

the question was answered its is one of those in series 9 led board the cheap 1 to three dollar ones thanks guys
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Old 03-19-2014, 03:09 AM #5
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Default Re: is it possible to build a good ciruit from a 9 led puck

Sooo Looong ago when we were harvesting RED's, I took
a chance and made one of these flashlights direct drive -
No driver circuit. It relies on battery internal impedance
to limit the current. I held my breath first time I hit the
button!!!! It still outputs 105 mW of RED after many years!!!
We were in hog heaven back then with that power. It could
POP a balloon. Our first watt meters !!!!

I do recommend using a driver to protect the LD and keep
constant output.
HMike
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Last edited by Hemlock_Mike; 03-19-2014 at 03:13 AM.
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