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Old 08-25-2007, 11:24 PM #1
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Default *Possible* Cheap Pre-built LD Driver!

anybody think any of these drivers would be appropriate in driving SenKat's GB Diode?

specifically im looking at the "EU-37 laser diode driver board" or the
"EU-38 laser diode driver board"

h t t p:// w w w.roithner-laser.com/Drivers.htm

-eric


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Old 08-25-2007, 11:28 PM #2
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Default Re: *Possible* Cheap Pre-built LD Driver!

Ummm...You forgot the link.....

Of what driver do you speak????

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Old 08-25-2007, 11:32 PM #3
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Default Re: *Possible* Cheap Pre-built LD Driver!

iam not to good with electronics but you would have to look at the ma out put for what i know and theres no link
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Old 08-25-2007, 11:36 PM #4
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Default Re: *Possible* Cheap Pre-built LD Driver!

LOL! sorry
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Old 08-25-2007, 11:46 PM #5
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Default Re: *Possible* Cheap Pre-built LD Driver!

Yes, the EU-38 would work. It is good up to 1.2 amps. The EU-37 is only good to 200ma.

http://www.roithner-laser.com/Drivers.htm

From what I understand shipping is astronomical so it would be beneficial only if someone wanted to do a group buy on them.
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Old 08-26-2007, 12:49 AM #6
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Default Re: *Possible* Cheap Pre-built LD Driver!

gazoo; wouldnt the EU-37 laser diode driver board be more realistic since the GB diode from SenKat in CW mode only draws 130mA?
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Old 08-26-2007, 12:54 AM #7
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Default Re: *Possible* Cheap Pre-built LD Driver!

It can draw more though if you push it. I am pretty sure.
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Old 08-26-2007, 01:17 AM #8
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Default Re: *Possible* Cheap Pre-built LD Driver!

in other words;

if i was to 'overclock' my diode, rated at 130, 200 would be as much as i'd want to risk it no?
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Old 08-26-2007, 01:39 AM #9
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Default Re: *Possible* Cheap Pre-built LD Driver!

I've pushed one of the GB diodes to 500 mA !!!! *That's with TEC cooling.

I would recommend staying at 250 to 275 mA ( WITH HEATSINKING) untill you have a feel for the circuit and diode. *Once you are happy with the laser, push the other one to the MAX !!! *Be Careful..

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Old 08-26-2007, 01:48 AM #10
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Default Re: *Possible* Cheap Pre-built LD Driver!

The point is even if you want to run your diode at 130ma, what are you going to do 6 months from now if we find 300ma diodes. If someone did a GB for the EU-38, I would but a few.

And Mike is right, don't push your diode too hard to begin with. You will be surprised what 200ma of current can do.
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Old 08-26-2007, 01:54 AM #11
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Default Re: *Possible* Cheap Pre-built LD Driver!

Gazoo -- *

You got it -- Start in a LD "safe" area, enjoy and then start pushing the limits. *There's a bunch of us who went for the MAX right away and went to bed unhappy.
Ooohhh -- you won't believe what 350 mW can do !!! Slash tape !!!

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Old 08-26-2007, 02:08 AM #12
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Default Re: *Possible* Cheap Pre-built LD Driver!

Well I have already went to bed unhappy a couple of times. I don't think it is because I pushed the diode too hard, but rather ran it too long. I need to be more careful.

I have my TEC cooler and LD independently powered by two of daedal's circuits, but running off the same power supply.

My RS rheostats came today so I have very good control over the TEC and LD.
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Old 08-26-2007, 02:12 AM #13
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Default Re: *Possible* Cheap Pre-built LD Driver!

Quote:
Originally Posted by Hemlock Mike
I must have a computer problem here, many posts here don't show capital letters or punctuation. *I gotta check this out - It makes reading difficult for me.
LOL !!! Yer KILLIN ME !

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Old 08-26-2007, 02:22 AM #14
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Default Re: *Possible* Cheap Pre-built LD Driver!

THose EU-38's look good to me!!!

Does anyone know the cost per unit, or what the shipping works out to be....

I can see myself getting 1/2 dozen or so right off the bat!!!

Maybe we can coerse Daedal to do another sample deal for testing.....that way we can know what we're getting before we order!

If I had the proper equipment to be able to test .......

Oh well....

But seriously..those look like WINNERS to me!!!

Just imagine the flashlight mods we could do!!!!

WOOHOOOOOO

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Old 08-26-2007, 02:23 AM #15
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Default Re: *Possible* Cheap Pre-built LD Driver!

Here is a pic of the peltier with the two LM317T's heat sinked:


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Old 08-26-2007, 02:25 AM #16
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Default Re: *Possible* Cheap Pre-built LD Driver!

And here is the other side with the rheostats. I love 3M double sided sticky tape.. ;D

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