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Old 10-17-2007, 11:32 PM #1
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Default AixiZ modules..I never knew.....

I have just routinely disposed of the little 5MW laser module whenever I needed an AixiZ housing for a red burner...

Well..today I was a little bored..so I took one of those Laser diodes with the circuit board attached, and hooked it up to a 3.0 volt Cr-123 battery..

I discovered there is a small green LED on that circuit board that lights whenever the diode is powered!

Just what good it does when it's mounted inside the round Aixiz housing, I have no idea...but it is kinda neat!

Wanted to share....I'm easily impressed some times!

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Old 10-17-2007, 11:47 PM #2
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Default Re: AixiZ modules..I never knew.....

I found it under all that white crap. Man thats tiny!
and it still lights even if the LD is chopped off.
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Old 10-18-2007, 04:31 AM #3
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Default Re: AixiZ modules..I never knew.....

the LED may provide a little bit of voltage 'regulation' or current limiting to the LD. possibly even something set up in a feedback loop to stop the power source being completely drained after the voltage drops below a given threshold.

of course, one would need to see the circuit diagram to clearly establish if it's purpose extends beyond that of a notification lamp.
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Old 10-18-2007, 02:28 PM #4
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Default Re: AixiZ modules..I never knew.....

Ask and you shall receive.
http://www.laserpointerforums.com/fo...num=1190748532
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Old 10-18-2007, 04:49 PM #5
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Default Re: AixiZ modules..I never knew.....

Yup, its a voltage reference - leds are nice for that purpose and probably cheaper than a proper reference chip
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Old 10-18-2007, 10:50 PM #6
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Default Re: AixiZ modules..I never knew.....

I discovered that too about a month ago, when I powered it up I thought something was glowing hot until I realized it was just a tiny LED!
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Old 02-04-2008, 03:03 PM #7
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Default Re: AixiZ modules..I never knew.....

saw that too but mine only comes on if i short out one of the resistors don't ask me which because i forgot.
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