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Old 04-04-2013, 10:38 PM #1
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Default FS: PL520 Direct Green Laser Diode

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Old 04-05-2013, 02:09 AM #2
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Default Re: FS: PL520 Direct Green Laser Diode

Just wondering how many of these you have in stock...I am planning to do a build sometime, and I would like it to have significance. I think such a wavelength would be significant.
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Old 04-05-2013, 02:24 AM #3
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Default Re: FS: PL520 Direct Green Laser Diode

Anyone want to start a murder fund for power and wavelength readings? I'll pitch in.
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Old 04-05-2013, 02:29 AM #4
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Default Re: FS: PL520 Direct Green Laser Diode

Also, let's say I DID want to buy one of these bad boys....is there a particular driver setup that would be good? Things to avoid? I don't know a lot about dropout voltages and I have never needed to find a driver for a GREEN diode LOL.

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Old 04-05-2013, 02:44 AM #5
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Default Re: FS: PL520 Direct Green Laser Diode

I'm going to try to use the Blitz linear set to 190mA (max operating current on data sheet) and 2-3 batteries. The data sheet has its operating voltage as 8V. I'm fairly nervous too about these as we're kinda walking on thin ice with these.
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Old 04-05-2013, 02:50 AM #6
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Default Re: FS: PL520 Direct Green Laser Diode

How much different would 520nm be than 532nm? Just curious....
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Old 04-05-2013, 02:51 AM #7
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Default Re: FS: PL520 Direct Green Laser Diode

The x-drive (Lazeerer's buck driver) with three li-ion cells has been used with this diode. I believe that's what RHD and Arytha (SP?) used for their builds.

The operating voltage is a real pain in the backside with this diode.

Quote:
Originally Posted by wannaburnstuff View Post
How much different would 520nm be than 532nm? Just curious....
Check out RHD/Arytha pictures of their comparisons or zraffleticket's pictures. Both have good comparison pictures with 532nm.

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Old 04-05-2013, 02:59 AM #8
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Default Re: FS: PL520 Direct Green Laser Diode

Quote:
Originally Posted by ARGLaser View Post
The x-drive (Lazeerer's buck driver) with three li-ion cells has been used with this diode. I believe that's what RHD and Arytha (SP?) used for their builds.

The operating voltage is a real pain in the backside with this diode.



Check out RHD/Arytha pictures of their comparisons or zraffleticket's pictures. Both have good comparison pictures with 532nm.
I forgot he used a 3x cell host, it looks smaller. I guess I'm buying a V7 X-Drive tonight... I have one of these diodes just waiting for a 3.8mm press, host, and driver. It'll be my pleasure to post a build thread probably around Monday or Tuesday next week when it's complete.

I'll pitch into a murder fund.
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Old 04-05-2013, 03:17 AM #9
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Default Re: FS: PL520 Direct Green Laser Diode

Aye, the difference is noticeable. Its not too far off-- but it's a much nicer green than 532nm.

I might pitch into the murder fund.
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Old 04-05-2013, 03:31 AM #10
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Default Re: FS: PL520 Direct Green Laser Diode

Quote:
Originally Posted by bloompyle View Post
I forgot he used a 3x cell host, it looks smaller. I guess I'm buying a V7 X-Drive tonight... I have one of these diodes just waiting for a 3.8mm press, host, and driver. It'll be my pleasure to post a build thread probably around Monday or Tuesday next week when it's complete.

I'll pitch into a murder fund.
Can't wait to see the build tread!
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Old 04-05-2013, 03:37 AM #11
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Default Re: FS: PL520 Direct Green Laser Diode

Would it be possible to use a Boost driver with these to get it to a more manageable number of cells?
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Old 04-05-2013, 03:54 AM #12
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Default Re: FS: PL520 Direct Green Laser Diode

Quote:
Originally Posted by wannaburnstuff View Post
Would it be possible to use a Boost driver with these to get it to a more manageable number of cells?
As long as it can boost to 8V. IIRC efficiencies will be lower with a greater difference between vin and vout.
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Old 04-05-2013, 05:09 AM #13
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Default Re: FS: PL520 Direct Green Laser Diode

OK, I need one of these!
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Old 04-05-2013, 05:15 AM #14
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Default Re: FS: PL520 Direct Green Laser Diode

I hate to say this, but 520 might be virtually indistinguishable from 532.

To see the nice forest green color, you really need down around the 510 to 515 (max) range.
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Old 04-05-2013, 05:17 AM #15
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Default Re: FS: PL520 Direct Green Laser Diode

Gunna use a microboost, it can boost to 13V!

Rule of thumb for output voltage and current for the microboost:

(Vout x Iout) ) / (Vin) < 1.2

So (8V x 0.2A) / 4.2V = 0.38

therefore 0.38 is less than 1.2 so it will work well.
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Old 04-05-2013, 05:22 AM #16
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Default Re: FS: PL520 Direct Green Laser Diode

Hey man been a while! When I get this thing built will you spectrometer it for me?

Ill either roll something custom for it or go with benboost.
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