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Old 04-15-2014, 02:15 PM #1
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Default driver for IR diodes

I am looking to find a small driver able to drive some TO-18 IR diodes (require on output: 2.4V/1A-1.5A). I prefer to be something adjustable (but is not a must) and input up to 4.2V. What you suggest? Regards, Alx



Last edited by alx; 04-15-2014 at 02:17 PM.
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Old 04-15-2014, 04:21 PM #2
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Default

You can use the x-drive buck driver it can do the job.
EDIT: here's a link for the driver just pm lazeerer
FS: X-Drive V6 3A Buck Driver "Sale and Info"

Last edited by oahu99; 04-15-2014 at 04:22 PM.
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Old 04-15-2014, 05:56 PM #3
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Default Re: driver for IR diodes

Hi Oahu,

I found x-drive before to post here. I would like to use it but seems that is suitable for blue diodes. Din you used it with IR? Are you sure is working with IR diodes?

Regards, Alx
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Old 04-15-2014, 06:52 PM #4
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Default Re: driver for IR diodes

The x-drive would be fine for IR diodes. Just use one battery, instead of two. This is because the vf for IR diodes is so low.

If you don't want to have to worry about setting the driver yourself with a testload, consider a AMC7135 based-driver. It can be configured to 1050ma or 1400ma (each chip puts out 350ma)

Something like this;
$1.70 3V~5V 3* AMC7135 LED Flashlight Driver Circuit (Generic) - 1050mA / reverse polarity protection / 17mm at FastTech - Worldwide Free Shipping
or
$1.92 3V~5V 4* AMC7135 LED Flashlight Driver Circuit (Generic) - 1400mA / reverse polarity protection / 17mm at FastTech - Worldwide Free Shipping

These are not recommended, but i think (someone can second this) they will work

Good luck
-Matt
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Old 04-15-2014, 08:49 PM #5
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Default Re: driver for IR diodes

Quote:
Originally Posted by KRNAZNBOY View Post
The x-drive would be fine for IR diodes. Just use one battery, instead of two. This is because the vf for IR diodes is so low.

If you don't want to have to worry about setting the driver yourself with a testload, consider a AMC7135 based-driver. It can be configured to 1050ma or 1400ma (each chip puts out 350ma)
That's the point , I would like to be adjustable. I cannot use preset currents. As I am able to see:

- x-drive come with preset currents. Does exist also adjustable version?
- x-drive size is 10.3x15.4 (so will not fit inside Aixiz module) but exist also many other version with smaller PCB size.
For example: 8.3x10.2, 8.3x11.8, 9.2x14 and 9.5x15.2

Not clear for me, one of those version (adjustable, smaller PCB size) are available for sale here too?

Regards,
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Old 04-15-2014, 10:28 PM #6
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Default Re: driver for IR diodes

Try messaging Lazeerer. He makes and sells x-drives, flexdrives, and boost drives. I have seen adjustable x-drives, so he can probably sell you one.
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Old 04-15-2014, 10:32 PM #7
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Default

Actually, I just measured the dimensions of my aixiz module and the end barrel had a 10.38mm inner diameter.
It may fit, just something to think about as I have not tried one myself.
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Old 04-16-2014, 12:04 PM #8
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Default Re: driver for IR diodes

This should be right up your alley, if you're willing to put the driver in a pill instead.

Survival Laser Driver

I use this driver to run my 808nm 9mm diode laser and it has proven reliable. They also sell an adjustable version but I haven't used it before.

http://www.survivallaserusa.com/Surv..._11167774.aspx
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Old 04-16-2014, 04:26 PM #9
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Default Re: driver for IR diodes

Hi Duke,

I will take care about it, but it would be nice if will be 15mm dia. This one is 16.8mm ... but I will take care about it ... sent a PM to lazereer and waiting his answer. He produced a lot of PCB, and this is confusing users but is proving that is still looking for and identity and the final decision ... what to build exactly ...

Regards,
Alx

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Old 04-16-2014, 04:33 PM #10
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Default Re: driver for IR diodes

And another question: "The switching regulator IC chip has an efficiency as high as 91%"

Can somebody explain what does it mean 91% efficiency? As I could understand, it is referring about heat-sink, but I cannot understand how and what exactly it mean ...
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Old 04-16-2014, 04:36 PM #11
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Default Re: driver for IR diodes

@ChaosLord

"I have seen adjustable x-drives" ... thanks for hint.

yes indeed, seems that is a reality, adjustable x-drives exist ... I'm very curious about lazeerer answer ...
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