Old 10-17-2008, 01:33 PM #17
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Default Re: Green laser module drive *board

Quote:
Originally Posted by henrystal
[quote author=ArRaY link=1223951839/0#6 date=1224159573]-.- argh
405nm blue-violet laser diodes?
what about the power?[/quote]

I only edited my post because I asked about the output voltage, but then I read it in your initial post... Looks like a good deal if shipping is low. Now all we need is a cheap source of IR diodes. Around 5 dollars. Best bet would be the diodes from stonetek.
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Old 10-17-2008, 01:36 PM #18
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Default Re: Green laser module drive *board

Quote:
Originally Posted by phoenix3200
[quote author=TheMonk link=1223951839/0#10 date=1224172461]Can it handles 330mA @ 5.5v 1.8 Watts?

Most 5mW Green Laser Drivers only need 330mA @ 1.7v to drive the IR Diode.
Ouch. *That's still less than 1% efficiency as compared to about a 20% efficiency in Blue. *Even so, if it could handle 100mA at 5.5 V, that would be enough for me. *I think I'll wait until I hear results from someone else.[/quote]

Do you mix something up? Show me a blue laser with 20% efficiency?
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Old 10-17-2008, 04:15 PM #19
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Default Re: Green laser module drive *board

Quote:
Originally Posted by Wesdaman14
At 1$?? You're Just being Greedy now lol
Yep. *I'm a cheapskate
Quote:
Originally Posted by ArRaY
Do you mix something up? Show me a blue laser with 20% efficiency?
The charts I've been seeing indicate 100mA juice corresponds to about 100mW of power. *At 5 V, that's 20%, but if the numbers are off by a little bit (e.g. 5.5 V, 125mA -> 100mW), that's still 15%, which is a lot higher than a DPSS green laser.

Apparently I've been misreading the first post. This is a simple current regulator that most likely takes a 3 V input (the input isn't actually stated), and outputs up to 1.5 V, 330 mA. *It's not a step-up converter from 1.5 V to some higher voltage (like 5.5 V) as I and others have hoped. *However, this is a very reasonably priced option for obtaining a regulator for IR diodes.
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Old 10-17-2008, 04:24 PM #20
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Default Re: Green laser module drive *board

Hell, you mean a blu-ray laser! Itīs freakin violet! Marketing win I guess...
That is no suprise it is more efficient, because it is a Laser diode! The un-efficient thing in the green lasers is the frequency convertion from 808 to 532, but compared to 473 and 593.5 it is quite efficient!

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Old 10-17-2008, 05:24 PM #21
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Default Re: Green laser module drive *board

Doesn't 405nm = 473 nm? :P

I knew the frequency conversion crystal took a hit on the efficiency; I just didn't realize that the crystal itself was so inefficient.
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Old 10-17-2008, 05:48 PM #22
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Default Re: Green laser module drive *board

Quote:
Originally Posted by phoenix3200
Doesn't 405nm = 473 nm? :P

I knew the frequency conversion crystal took a hit on the efficiency; I just didn't realize that the crystal itself was so inefficient.
Not quite : I think it is about 20-30 % in the best cases with green, and around 3% with blue? someone please confirm that.
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Old 10-17-2008, 05:58 PM #23
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Default Re: Green laser module drive *board

Quote:
Originally Posted by ArRaY
[quote author=phoenix3200 link=1223951839/20#20 date=1224260688]Doesn't 405nm = 473 nm? :P

I knew the frequency conversion crystal took a hit on the efficiency; I just didn't realize that the crystal itself was so inefficient.
Not quite *: * I think it is about 20-30 % in the best cases with green, and around 3% with blue? someone please confirm that.[/quote]

yeah thats a good ballpark but it can be more or less depending on the crystals and their quality and also their alignment
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