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Old 10-16-2012, 09:03 PM #1
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Default TTL Capable Laser Driver

Hello!

I am new to the forum, and came here looking for some help on my research project. Specifically, I need to drive a high(er) power laser diode at ~2.6V and ~1A, and be able to control it through TTL modulation (up to ~1 KHz rate).

Does anybody know of a good driver out there that could help me do this? I thought the FlexMod P3 would fit the bill, but I can't find any (maybe there is one or two around these parts that somebody would be willing to sell me?)... Any other thoughts?

Thank you in advance!
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Old 10-21-2012, 11:22 AM #2
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Default Re: TTL Capable Laser Driver

Get a flexmod if you can from someone....

If you can power it from AC then there are a few different ones. Here's one which might work 445nm Laser Diode Driver :: Power Supply Units :: Ultralasers, Inc
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Old 10-21-2012, 11:34 AM #3
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Default Re: TTL Capable Laser Driver

Try sourcing a P3 over at PL...


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Old 10-21-2012, 12:03 PM #4
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Default Re: TTL Capable Laser Driver

I still have a ST-driver if you want, New Linear driver! ST-DRIVE
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Old 10-22-2012, 05:53 AM #5
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Default Re: TTL Capable Laser Driver

Tell us more about your project, please.
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Old 10-22-2012, 05:40 PM #6
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Default Re: TTL Capable Laser Driver

Interesting thread here:- Making TTL driver for DX 200mW greenie
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Old 10-28-2012, 08:22 PM #7
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Default Re: TTL Capable Laser Driver

Thanks everybody for the information.

I am still on the hunt for a P3 (if anyone has a spare, let me know!)

Basically, I need to drive a high-power red diode laser in a pulsed configuration (something like 5 msec on, at 30 Hz, ~2.5V load), and push ~1A in current equivocally. Any other thoughts on viable TTL drivers out there?

Blord: Do you have a data sheet on the ST-driver available?
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Old 10-28-2012, 08:29 PM #8
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Default Re: TTL Capable Laser Driver

Quote:
Originally Posted by ntrail View Post
Thanks everybody for the information.

Blord: Do you have a data sheet on the ST-driver available?
Here is a data sheet, http://www.st.com/internet/com/TECHN...CD00185795.pdf
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Old 01-25-2013, 04:16 AM #9
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Default Re: TTL Capable Laser Driver

Can try this ttl controlled laser diode driver though the power max is 750mA - the limitation of the LT1121 chip used
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Old 01-25-2013, 10:26 AM #10
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Default Re: TTL Capable Laser Driver

Go to PL forum.
Driver I have does TTL very nicely is
called Die4Driver. There is 2 versions
around. One does 445nm diodes and the
Other is a red driver.
Driver does 1.86A at nearly 6v out from a 8.4v source
Fill the form out.
Red does same current out but can't be used for
higher voltages.
Robin's driver is probably
the best TTL driver out there still being produced
Contact Me
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Old 01-25-2013, 01:24 PM #11
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Default Re: TTL Capable Laser Driver

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My IPhone just sent a double post.
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Old 01-25-2013, 02:02 PM #12
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Talking Re: TTL Capable Laser Driver

Quote:
Originally Posted by lasersbee View Post
You can delete your own post by clicking [Edit] at the
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Then at the top of that page you can delete your Post...


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Great!!
I tried doing that with my phone and couldn't get it to work.
...Busy night... Tired.

Thanks for your help!

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Old 01-25-2013, 08:54 PM #13
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Default Re: TTL Capable Laser Driver

Quote:
Originally Posted by ntrail View Post
Thanks everybody for the information.


Basically, I need to drive a high-power red diode laser in a pulsed configuration (something like 5 msec on, at 30 Hz, ~2.5V load), and push ~1A in current equivocally. Any other thoughts on viable TTL drivers out there?
Hi ntrail,

I use this one High Current LM358 Laser Diode Driver (405nm / 445nm / 635nm / 650nm / IR Diodes) - Detailed item view - OdicForce Lasers Online Shop

To add a TTL control, it just needs a transistor adding from one side of the voltage ref to ground and the soft start cap reducing in value depending on the PWM frequency. See post #6.

ATB
MM

Last edited by Multimode; 01-25-2013 at 08:56 PM.
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