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Old 03-14-2011, 02:21 AM #1
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Exclamation Help! 405nm Blue-Ray Build

I am brand new to this site but have been reading many tutorials and looking into many laser forums and so far have a successful build minus one issue.

i have a 405nm blue ray diode that i seated in an aixiz housing with their 405 lens. i put this into a mini Maglite (2 cell AA)

i found that the diode runs around 150mW at 6v, i have been using 4 standard AA batteries to test the diode until i got all of the parts to put it all together but now The Problem is : i only have 2 cells in this flash light and i need 6 volts. i planned on using these batteries ***Varta CR AA 3V/2000mAh Lithium "AA" Battery*** because i couldn't seem to find any other AA batteries that were 3v each. Is there a special charger for these? or do you know of any other way i can accomplish this?

Thanks!


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Old 03-14-2011, 03:51 AM #2
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Default Re: Help! 405nm Blue-Ray Build

you dont need 6v for blu ray ... just use 2 14500's
and you do have a driver and HS right??
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Old 03-14-2011, 04:42 AM #3
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Default Re: Help! 405nm Blue-Ray Build

Are you not using a driver.? You Need to use a Driver.

A simple LM117 Driver will work great with 2x 14500.
DIY Homemade laser diode driver

What 405nm diode do you have. Is it a PHR-803T,GGW-H20L,SF-AW210. Those are the only 3 i can think of at that power.

I would stop direct connecting your diode to the batteries. Before you damage it. If you haven't already.

Also as suggested above, get a heatsink. ASAP. The diode is probably screaming hot without one.
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Old 03-14-2011, 05:00 AM #4
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Default Re: Help! 405nm Blue-Ray Build

405nm 150mw burning blu-ray laser diode. USA 3 day Ship - eBay (item 270719516774 end time Apr-12-11 08:34:23 PDT)

^^^this is the diode i'm using

thanks for the quick replies by the way, i dont have a driver =/ or heat sink, i saw that jayrob was selling some custom ones for different flashlights (driver included on one i believe) would i better off changing my housing? i dont really know of a heat sink that fits a mini mag
this would be far easier if there was a class for this or something, im more of a visual learner when it comes to "projects"
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Old 03-14-2011, 05:14 AM #5
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Default Re: Help! 405nm Blue-Ray Build

Are You using a Driver?? We need more info, but a linear driver would need 6.5v. You need to use 3.7v batteries like 10440s etc.
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Old 03-14-2011, 10:37 AM #6
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Default Re: Help! 405nm Blue-Ray Build

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Originally Posted by WarrantyVoider View Post
...thanks for the quick replies by the way, i dont have a driver =/ or heat sink...
Then don't power the diode! If you've been reading many tutorials as you've said, you should know that powering diodes directly from a battery is A Very Bad Idea and will likely kill your diode sooner or even sooner. Running without a heatsink won't kill it directly but a high temperature shortens it's life a lot.
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Old 03-14-2011, 02:08 PM #7
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Default Re: Help! 405nm Blue-Ray Build

i guess he followed kipkay's "tut"
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Old 03-14-2011, 08:07 PM #8
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Default Re: Help! 405nm Blue-Ray Build

well you don't need a large heat sink for a low powered laser you should be fine. to make it all work in the mini mag light you will need:

a boost driver and keep your current standard aa bats.
or a linear driver and switch to 14500 3.7v batts. using 2 for a total of 7+vdc.

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Old 03-14-2011, 11:23 PM #9
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Default Re: Help! 405nm Blue-Ray Build

i apologize for being so new to this, this is my first attempt at a build and im trying to be cost affective. where would i go about getting a linear driver so that i could keep it at a steady 6v? and yes i started to follow kipkays tut up until i found this site so unfortunately i was exposed to poor quality early.
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Old 03-14-2011, 11:39 PM #10
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Default Re: Help! 405nm Blue-Ray Build

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Originally Posted by WarrantyVoider View Post
i apologize for being so new to this, this is my first attempt at a build and im trying to be cost affective. where would i go about getting a linear driver so that i could keep it at a steady 6v? and yes i started to follow kipkays tut up until i found this site so unfortunately i was exposed to poor quality early.
its not suposed to be 6v
get 2 14500's and your good to go
and you can just make a simple lm317t driver
search here and you will find some tuts on what resistor to use and all
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Old 03-15-2011, 01:01 AM #11
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Default Re: Help! 405nm Blue-Ray Build

please read more... for a linear driver you need like over 7volts.
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