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Old 04-07-2011, 06:01 PM #1
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Default LPC-826 power supply

I am planning to build lsr with lpc-826 diode with lm317 driver
what battery(batteries) I need to power it? (570mA)


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Old 04-07-2011, 06:06 PM #2
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Default Re: LPC-826 power supply

i think you need at least 7. make sure yo use good batteries.
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Old 04-07-2011, 08:03 PM #3
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Default Re: LPC-826 power supply

Need 7 what? Also, if this is like many of the other red diodes, direct driving with 2x1.5V batteries works as long as your diode is heatsinked. I have done his with 635, and 660 diodes and never had an issue. Cheers.
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Old 04-07-2011, 08:33 PM #4
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Default Re: LPC-826 power supply

lol i read it too quickly. i thought he asked for the voltage.

with lm317 use 2 3.7v lithium batteries.
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Old 04-08-2011, 06:08 PM #5
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Default Re: LPC-826 power supply

with lm317 use 2 3.7v lithium batteries.
how many mAh?
and will it fit Hotlight host?
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Old 04-08-2011, 06:14 PM #6
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Default Re: LPC-826 power supply

3.7v batts come in many sizes. more common here are 10440=aaa 14500=aa and 18650= idk lol.


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Old 04-08-2011, 07:12 PM #7
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Default Re: LPC-826 power supply

and wich can fit hotlight host?
and how many mAh batteries would it be , or there is not difference? ?
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Old 04-10-2011, 04:47 AM #8
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Default Re: LPC-826 power supply

2 cr123s in series should work and fit any 18650 hosts like the hotlights
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Old 04-10-2011, 05:46 AM #9
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Default Re: LPC-826 power supply

2x CR123 is kind of a pain to fit in hotlights.

Grab 2x 10440s. Then just solder a piece of wire across the third 10440 battery slot. Two of those batteries will give you enough voltage and enough current to power an LM317 based driver for a red diode.

Simple, more than capable, and leaves you lots of room in the pill to build the driver without needing to modify the hotlight.
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Old 04-10-2011, 11:57 AM #10
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Default Re: LPC-826 power supply

thanks for the help
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Old 05-15-2011, 06:35 PM #11
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Default Re: LPC-826 power supply

I have purchased all the parts for lm317 driver and New Focusing Laser Host for Laser Construction | eBay
Wich batteries Will give me with these 416mA?

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Old 05-15-2011, 11:29 PM #12
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Default Re: LPC-826 power supply

Quote:
Originally Posted by personx910 View Post
I have purchased all the parts for lm317 driver and New Focusing Laser Host for Laser Construction | eBay
Wich batteries Will give me with these 416mA?
$4.49 - TrustFire Protected 16340 3.6V 880mAh Lithium Batteries (2-Pack Grey) - Batteries

These will work fine!
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Old 05-16-2011, 04:54 PM #13
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Default Re: LPC-826 power supply

Thank you
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Old 05-30-2011, 02:28 PM #14
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Default Re: LPC-826 power supply

LuxorLasers747
that's cr123 and not cr2 : (
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Old 05-31-2011, 02:55 PM #15
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Default Re: LPC-826 power supply

I found cr2 3.7v but I have one more problem because I'm nooob in electronics
How i can connect it to battery and clicky switch??

can i just wire + and - of driver and connect spring to it?
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Old 05-31-2011, 07:33 PM #16
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Default Re: LPC-826 power supply

Do you plan on using the driver in a hotlight host? Hotlights usually don't have a clicky switch on the tail. In a hotlight you connect the (-) from your driver to a bare metal part of the host housing. The (+) is coming from the front metal tab of the switch. Somebody here on the forum made a nice guide about the hotlights with really nice pictures.
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