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Old 08-19-2014, 06:16 PM #1
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Default WTB Diode Driver (not boost)

Looking for a driver with a current of 150> mAh for a PHR diode.

I have done my research and used the search bar below but haven't had much luck with drivers that are currently for sale (seen a few but from old threads)

Would appreciate offers of drivers or suggestions on where to buy from for around $10




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Old 08-19-2014, 08:50 PM #2
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Default Re: WTB Diode Driver (not boost)

Why not make your own with an LM317? It's cheap
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Old 08-19-2014, 08:55 PM #3
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Default Re: WTB Diode Driver (not boost)

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Originally Posted by ARG View Post
Why not make your own with an LM317? It's cheap
I've read a few threads about problems with the LM317.

Would it be the best option in terms of a cheap ($10) driver?

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Old 08-19-2014, 09:21 PM #4
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Default Re: WTB Diode Driver (not boost)

Yeah, you can easily build it for under $5

I would recommend just doing the LM317 and resistor combo, don't worry about extra caps or diodes, that's typically where the problems come into play.
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Old 08-19-2014, 09:31 PM #5
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Default Re: WTB Diode Driver (not boost)

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Originally Posted by ARG View Post
Yeah, you can easily build it for under $5

I would recommend just doing the LM317 and resistor combo, don't worry about extra caps or diodes, that's typically where the problems come into play.
Okay, is there a build thread I can refer to? I've checked out the DIY Homemade laser diode driver but not 100% sure.

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Old 08-19-2014, 09:35 PM #6
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Default Re: WTB Diode Driver (not boost)



That's all there is to it, an LM317 and a resistor (you don't need the capacitor in the picture). Use the formula to figure out what value of resistor you need

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Old 08-19-2014, 10:09 PM #7
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Default Re: WTB Diode Driver (not boost)

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Originally Posted by ARG View Post


That's all there is to it, an LM317 and a resistor (you don't need the capacitor in the picture). Use the formula to figure out what value of resistor you need
Thanks for all the help
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Old 08-19-2014, 10:34 PM #8
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Default Re: WTB Diode Driver (not boost)

No problem
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