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FrozenGate by Avery

New 9mm 445 diodes

Huh. I was unaware they were run that at such high currents in the projectors. I guess it is in part because of the heatsinks they use in there vs the typical handheld laser heatsink.
 





I would like to see some testing showing them running that hard in the projector.

Rick are you sure the one that Daguin reviewed was not from a Ben unit? I only ask again as the scratches on the top of the diodes can are a dead ringer for the ben models that were going around the last few months.

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I have not. If I get some time I will have to put that on the list.:beer:
 
So far I've been running mine at 2.2A and been getting 3W with a peak of 3.2W. No issues yet.
 
Did I hear someone saying they need $0.02c ?

With 2x flexdrives delivering 800mA each so 1.6A in total, I'm getting 2.2W out with the stock PJ lens.

:lasergun:
 
Yeah something got baked on mine too... it's BAD :crackup:

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ApexProxy said:
And yes Brunes forget the heatsink. You would damage your diode way before kicking the drivers protection anyway.
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Yep I came to exactly the same conclusion!

I think a maximum running time of 60 seconds, I will try to keep running times shorter than that, will be fine for me!

My intend was to build me a real strong burning laser to have fun with and do all the stuff you can watch in some videos.

And I think with that ammount of power output it will do all that easily in the range of 60 seconds!

Maybe somebody can tell me how "hot" the beam or the dot will be speaking of a laser with ~ 2,5 watt?
 
Actually the beam itself would have no temperature. The reason lasers get hot is because the laser is bombarding the surface of whatever you hit with so many photons that heat builds up. The actual temperature that the beam makes something become is based entirely on the composition of whatever you are aiming the beam at(how well the surface of that object absorbs the photons) and how small you focus the beam. The higher your power density(output power per size of the dot) and the more the surface of whatever you are hitting absorbs the photons the hotter it would be become.
 
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Hi!

That the beam itself isn`t hot at all sounds understandable, in other words it`s just "lightened air".

The darker the surface you hit, the hotter it will become.

But will it burn your finger instantly when you put it into the beam?
 
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Yes, yes and yes. Your finger absorbs quite a bit of the beam not because its dark but because organic material absorbs wavelengths near UV very well. Also, it doesn't take much heat to burn your finger.
 
Oh yea it can burn your finger. The worst I have had was one time I put my finger right in the focal point at the aperture and it passes though the layer of skin and burned my finger from the inside instantly blistering up. let me say it is a very unique and unpleasant feeling.:eek:
 
DTR said:
Oh yea it can burn your finger. The worst I have had was one time I put my finger right in the focal point at the aperture and it passes though the layer of skin and burned my finger from the inside instantly blistering up. let me say it is a very unique and unpleasant feeling.:eek:
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Once I was replacing the tail cap of my 2.5W 445 and I didn't realize the switch had been activated. I had the lens set to an extremely close focus for burning and had the lens about an inch from my palm when I connected the tail cap... something very interesting happened. It appeared that the laser sliced my palm and in doing so cauterized it. The cut resembled a razor blade wound and it was deep but didn't bleed at all. Lets just say I showed off a rather colorful side of my vocabulary for several minutes after and now I no longer replace batteries without a silicone lens cap installed...
 
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