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Old 05-23-2013, 10:38 AM #1
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Default Need to build a driver

I have a laser diode:
- 1.5 Watt
- 808nm
- 2.2V
- 1.2A
I need it to be portable but the size doesn't matter.
Is the best way for it to work is to build something or to buy a driver from ebay?
i know how to solder and it would be faster and easier. If it is better, can anyone send me a link for a circuit diagram for my specific laser?


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Old 05-23-2013, 12:15 PM #2
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Default Re: Need to build a driver

Why do you want a portable laser that emits 1.5Ws of invisible light?
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Old 05-23-2013, 01:38 PM #3
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Default Re: Need to build a driver

It can still burn stuff right?
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Old 05-23-2013, 01:41 PM #4
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Default Re: Need to build a driver

If you want to burn stuff so bad, buy a box of matches or a bic lighter.
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Old 05-23-2013, 01:45 PM #5
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Default Re: Need to build a driver

Can you please give me a link for the circuit diagram for this laser diode?
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Old 05-23-2013, 01:46 PM #6
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Default Re: Need to build a driver

What do you intend to use this laser for?
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Old 05-23-2013, 01:59 PM #7
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Default Re: Need to build a driver

That is a good question. I got a 808 laser and to be honest it's the most useless laser in my collection. I have to user a IR modified camera to see the beam.
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Old 05-23-2013, 02:17 PM #8
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Default Re: Need to build a driver

Can anyone... please... give me a circuit diagram for the laser...
I bought the laser diode and it would be a waist if i wont even try to experiment with it!
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Old 05-23-2013, 11:19 PM #9
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Default Re: Need to build a driver

Answer my questions and i may give you a diagram or tell you where to get a driver:
What are you going to use this laser for?
Do you know how to use this laser safely?
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Old 05-23-2013, 11:55 PM #10
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Default Re: Need to build a driver



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Old 05-24-2013, 12:34 AM #11
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Default Re: Need to build a driver

Google "ddl driver lm317"

Why are you guys stressing him? He wants to build it, not buy it.

Op, in future though, try searching instead of opening a thread. Driver building is a basic thing in this hobby.

Just make sure you are safe. You can't see the beam and you can easily hurt yourself or others
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Old 05-24-2013, 01:53 AM #12
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Default Re: Need to build a driver

I just want him to answer my questions. 1.5W of visible light is very dangerous and 1.5Ws of almost completely invisible light is very, very dangerous. I am curious as to what he will use it for because he wants it to be portable. Some of the new members don't know the dangers of lasers.
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Old 05-24-2013, 10:36 AM #13
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Default Re: Need to build a driver

Yes... I know how to use the laser safely. I have bought special protective glasses for this exact laser diode...
Will this circuit work for me:
http://www.google.co.il/imgres?sa=X&...5&tx=196&ty=53
Will I need to change anything? will this work for the high power of 1.5W?
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Old 05-24-2013, 10:43 AM #14
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Default Re: Need to build a driver

The laser diode shown in this circuit is a negative ground laser diode you have a positive ground laser diode so you will have to take that into consideration, now you will have a positive ground system.

Some one correct me if I'm wrong

It should work for your 1.5W LD but you will have to heat sink the LM317 regulator very well !

I'll say it also you only have two eyes, be careful !!!



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Originally Posted by theshutgun View Post
Yes... I know how to use the laser safely. I have bought special protective glasses for this exact laser diode...
Will this circuit work for me:
http://www.google.co.il/imgres?sa=X&...5&tx=196&ty=53
Will I need to change anything? will this work for the high power of 1.5W?
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Old 05-24-2013, 11:32 AM #15
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Default Re: Need to build a driver

How can i choose the best heatsink?
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Old 05-24-2013, 11:53 AM #16
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Default Re: Need to build a driver

What host do you plan on building it in?
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