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Old 10-27-2012, 04:24 PM #1
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Default Driver questions :/

So i know a driver for a laser diode gives the diode a CC which makes the diode happy..

How how the hell can i get the driver?.. Am pretty sure i can't get it.. So how can i make it?

I need some weird parts.. And i have no hell of an idea were to get those part.. But i know one thing. I have 2 old computer power supplies.. Which are full of those parts. So which parts of those 2 old computer power supply do i need to take off the power supply to make my lovely driver???!!!

Note. Some people told me batteries depend on the driver.. So here are the batteries i am going to be using

2 double A 2300 MAH Rechargeable energizer batteries.. As a power source.. So which parts do i need. Pictures too please..

Oh and here is a picture of one of the chips of the 2 power supplies..

Imageshack - 93012106.jpg

Imageshack - 78172233.jpg

Imageshack - 80411599.jpg

Imageshack - 29845834.jpg



Sorry for the bad quality of the pictures...


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Old 10-27-2012, 04:50 PM #2
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Default Re: Driver questions :/

you didnt mention what diode your trying to drive.
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Old 10-27-2012, 04:55 PM #3
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Default Re: Driver questions :/

Good that you are atleast motivated to make one..

Use the search button
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Old 10-27-2012, 05:07 PM #4
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Default Re: Driver questions :/

Am going to use it for a diode that i will get out of a DVD burner
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Old 10-27-2012, 05:49 PM #5
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Default Re: Driver questions :/

Good luck finding the parts necessary to drive an LPC diode (the type of diode you have) using only scrap parts from a computer PSU. From what I know, there aren't any low specialty CC parts on those boards that would help you.

Further, for a LPC diode, you are going to need at least 6V for your basic LM317-type driver. That means you need 4 batteries, not two. Once you have those batteries, you can go to a local RadioShack store and pick up a few 10uF capacitors, several 10 Ohm resistors, and an LM317T. That should be all you need and it shouldn't run you more than $10.
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Old 10-27-2012, 08:50 PM #6
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Default Re: Driver questions :/

http://www.rog8811.com/LM317%20compo...12663627278806

How much of each? and only 3 parts??? no more?? Are you suuure?
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Old 10-27-2012, 09:24 PM #7
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Default Re: Driver questions :/

Get 3 of the 10 ohm resistors, one LM317T, and two capacitors. A 1N400X diode is optional for reverse polarity protection.
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Old 10-27-2012, 09:44 PM #8
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Default Re: Driver questions :/

3 10 ohm resistors? 2 capacitors???

the http://www.rog8811.com/LM317%20compo...12663627278806

says 2 resistors and 1 capacitor
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Old 10-27-2012, 09:50 PM #9
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Default Re: Driver questions :/

The three resistors you want (10 Ohms) yields 3.33 Ohms in parallel which will give you 375mA, a good current value for an LPC diode. The two capacitors are one for input and one for output, just for added stability. You really don't need any capacitors, though. Just optional.
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Old 10-27-2012, 10:10 PM #10
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Default Re: Driver questions :/

Can always use 5 ohms in each resistor for 10 in 2 only?? and i will go with 1 capacitor.. tho. Thanks alot!
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Old 10-27-2012, 10:11 PM #11
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Default Re: Driver questions :/

Naw, I would use three so that you get better power dissipation.

Last edited by Wolfman29; 10-27-2012 at 10:11 PM.
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Old 10-27-2012, 10:24 PM #12
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Default Re: Driver questions :/

Well i shall get 3 !

tomorrow is the big day.. Were all what i drew on paper shall turn to reality..

I will buy everything tomorrow.. BUT the laser diode and the safety goggles.. Tho mum won't let me get the diode unless i first get the goggles.. haha.. Which will give me more time to think of a replacement to the aixiz module thingy..
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Old 10-27-2012, 10:35 PM #13
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Default Re: Driver questions :/

Quote:
Originally Posted by grim3271 View Post
.........give me more time to think of a replacement to the aixiz module thingy..
Its not possible to make a DIY laser pointer without a diode module / housing with acrylic lens. It costs $3 at most.. why do you want to skip this?
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Old 10-27-2012, 10:42 PM #14
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Default Re: Driver questions :/

I can't get my hand on a aixiz module.. So i want a replacement for that.. Something i could make lol.. And am ready not to pay 3 $ for that buy to pay 30 $ for that -_-
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Old 10-27-2012, 10:43 PM #15
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Default Re: Driver questions :/

Suit yourself!!
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Old 10-27-2012, 10:44 PM #16
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Default Re: Driver questions :/

Trying to do so.. but all i am doing is asking

HOW?!!!
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