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ArcticMyst Security by Avery

I need a win - Help me to NOT kill this mystery 635nm diode ?

rhd

rhd

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Hmmmm, ok - well then maybe the age just got to this guy?

It would make sense - if he held up to 600mA, he's clearly a hearty built diode. Perhaps he just couldn't product a decent output anymore. If this guy was in a used DVD authoring unit from 2000, that cost $5,000 + at the time, I'm sure he's been used in a fairly intense mastering house somewhere. Perhaps he actually hit that crazy "x thousand hours" lifespan?
 





J

joeyss

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I'd save it as one of the freak diodes. Still it looks like you didn't miss anything since it was only 10mw.
 
rhd

rhd

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joeyss said:
Looks like I found out what it should be. It SHOULD be about 10mw according to this. Atleast that's what the first dvd burners where.
Click to expand...

Good find!

Plus, the big claim to fame with this guy being 635 not 650, was that supposedly the lower wavelength allowed it to write more efficiently because the writing surface absorbed the lower wavelength light better. So this weird 635nm drive might not have needed the 10mW of first gen writers that were 650.

So it sort of makes sense. Suppose this WAS a 7mW diode, and has been used heavily for 11 years. Now I'm running it, through an acrylic lens, and trying to measure the optical output - I could see only registering 1mW at the end of all of that.
 
J

joeyss

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I also heard the materials that make the diode degrade over time and since this was old it probably wasn't as well made as a generic 10 mw diode today.
 
Trevor

Trevor

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rhd said:
There weren't any other diodes on the sled. Just two pathways into the optics - and one was really just a flat sensor board.
Click to expand...

My point is that any device that does not allow any laser light to escape qualifies as a Class I device.

Modern Blu-Ray burners are Class I along with DNA sequencers, some CO2 cutters, and other devices containing lasers that would ordinarily be classified as IIIb or IV.

-Trevor
 
J

joeyss

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That's kind of misleading if you're not aware of that. You'd think that have something like EXTERNAL class 1 and internal class 4 so you're aware.
 
A

anselm

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trevor?:eek:

Who is this guy?
And what have you done with my buddy twhite828?
AHHH it's "Invasion of the body snatchers"!!

Thanks rhd, anyhow, for ruling out this potential source of 635nm diodes.:)
I would never have given it as much current as you did, though.:tinfoil:
 
daguin

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Remember, folks. These "burners" do NOT actually "burn" anything. They simply create a shallow pit (deformation) in the medium (a very thin, internal, layer of the disc).

Peace,
dave
 
Krogith

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Ah RHD I feel sad for you, To bad your 60$ didn't get you at least the 10 mW it should be doing....
 
rhd

rhd

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Yup - $45 shipping to Canada. This thing was HEAVY.

Re dying at 300mA - I was very slow at incrementing it from 40mA. There was never a moment of anything about a few mW output.
 
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