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Old 06-08-2009, 12:47 PM #65
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Quote:
Originally Posted by millirad View Post
LPC running at 360ma..........

power?


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Old 06-08-2009, 11:41 PM #66
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~240mW, but thats an estimate. I don't have a Kenometer or other LPM. It's running with an AR glass lens.
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Old 06-09-2009, 10:03 PM #67
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Another LPC is running as of late last night, at 200ma. I will put a brass heatsink on and bump that to 380ma. Thanks Glenn! I have been putting the key turn interlock/switch on the back end of all of my lasers now. It looks cool and provides some level of safety. This way it takes a little more fore-thought to energize the beam.
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650nm - 325mw in stainless Raygun host. The dot is so bright it's
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Thanks Jay! Thanks Drew! Thanks Larry! Thanks Glenn! Thanks Dave!

Pink - 500mW (white w/red , ok not till later)
Please don't dazzle aircraft! You wouldn't hit someone in the face normally would you?
Home of the stainless RAYGUN !

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Old 06-10-2009, 11:23 AM #68
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Put the brass heat sink on and bumped my diy DDL driver to 380ma. That is one hot beam and I'm feeling really confident to turn a sled into a high power pointer now. It's a great feeling isn't it?
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Greenie - 100mw in diy aluminum host
650nm - 260mw in MXDL host with brass heatsink
650nm - 325mw in stainless Raygun host. The dot is so bright it's
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Thanks Jay! Thanks Drew! Thanks Larry! Thanks Glenn! Thanks Dave!

Pink - 500mW (white w/red , ok not till later)
Please don't dazzle aircraft! You wouldn't hit someone in the face normally would you?
Home of the stainless RAYGUN !

Last edited by millirad; 06-10-2009 at 11:28 AM.
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Old 06-11-2009, 10:12 AM #69
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That LPC has been bumped to 400ma. That should be enough. I have way too many current sense resistors in parallel on my DDL driver to get 400ma. I'll be getting some .47 ohm 1/4 watt resistors to fix that problem. The beam is certainly visible and the spot is too bright any closer than 15 feet without protective eye wear.
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Greenie - 100mw in diy aluminum host
650nm - 260mw in MXDL host with brass heatsink
650nm - 325mw in stainless Raygun host. The dot is so bright it's
PINK/ORANGE!
Thanks Jay! Thanks Drew! Thanks Larry! Thanks Glenn! Thanks Dave!

Pink - 500mW (white w/red , ok not till later)
Please don't dazzle aircraft! You wouldn't hit someone in the face normally would you?
Home of the stainless RAYGUN !
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Old 06-12-2009, 05:35 AM #70
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Bumped it up to 420ma and I think that will stay. I got a hold of some .12 ohm 1w resistors and some 100 ohm trimpots. Now one resistor and one trimpot to get as much current as I need on the current sense position on my diy DDL driver. I'm using two 3 volt cr123 lithium in series to power up.
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Greenie - 100mw in diy aluminum host
650nm - 260mw in MXDL host with brass heatsink
650nm - 325mw in stainless Raygun host. The dot is so bright it's
PINK/ORANGE!
Thanks Jay! Thanks Drew! Thanks Larry! Thanks Glenn! Thanks Dave!

Pink - 500mW (white w/red , ok not till later)
Please don't dazzle aircraft! You wouldn't hit someone in the face normally would you?
Home of the stainless RAYGUN !

Last edited by millirad; 06-12-2009 at 05:56 AM.
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Old 06-12-2009, 08:46 AM #71
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I attached a 5/8 inch diameter lens to the front of the LPC with AR glass lens. 4 inches in front of the laser I get a .2mm dot that smokes anything in its path. The DDL driver is bumped up to 470ma now. I should switch from brass heatsink to a copper one. Time to get the lathe fired up. I'm using a duty cycle of 10 seconds with the current overspec'd like that. It's a purpose built burner at the moment. If I had to guess, an LPM would register well over 5 watts on the focused beam spot. Anyone ever use their LPM with a focused spot just to find out?
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Greenie - 100mw in diy aluminum host
650nm - 260mw in MXDL host with brass heatsink
650nm - 325mw in stainless Raygun host. The dot is so bright it's
PINK/ORANGE!
Thanks Jay! Thanks Drew! Thanks Larry! Thanks Glenn! Thanks Dave!

Pink - 500mW (white w/red , ok not till later)
Please don't dazzle aircraft! You wouldn't hit someone in the face normally would you?
Home of the stainless RAYGUN !
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Old 06-12-2009, 06:42 PM #72
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Hey pal, it must be awesome!! I don't think it c/b 5 watts, but the output measurement is not different from smaller or larger spot size. you may be burning with 320 mW or so, and with a nice tight dot, it will burn very well indeed! Great work! -GH
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Old 06-17-2009, 08:05 AM #73
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Alas, finally it bit the dust running at 470ma, when the laser diode received a reflection from a lens I pulled from the sled. It was a freak and would have lasted a long time I believe if not for seeing it's own reflection. Good thing Glenn has moar for us in the near future. ;-) Edit: I believe that when an LOC is running at high output it is at it's most vulnerable state for being killed with its reflected beam. Just my humble opinion.
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Greenie - 100mw in diy aluminum host
650nm - 260mw in MXDL host with brass heatsink
650nm - 325mw in stainless Raygun host. The dot is so bright it's
PINK/ORANGE!
Thanks Jay! Thanks Drew! Thanks Larry! Thanks Glenn! Thanks Dave!

Pink - 500mW (white w/red , ok not till later)
Please don't dazzle aircraft! You wouldn't hit someone in the face normally would you?
Home of the stainless RAYGUN !

Last edited by millirad; 06-17-2009 at 08:08 AM.
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