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Old 07-16-2015, 07:11 PM #1
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Default 2W M140 445nm Aktiv cooled Laser

Hi All,

here now my, at the moment, strongest Selfmade Laser with aktiv cooling system For the Housing i used a full Aluminium Hand-Gas-Pump which used in the industry to locate dangerous chemicals in low concentration. The M140 LD is mounted in a cooper Heatsink with the M9x0,5 Fine thread like in the Aixiz Moduls for Collimator Lenses and fixed in the Aluminium-Head of the Pump.
The piston of the pump was modified to insert a 12V-fan and the bottom-cap was milled to fix the fan and close the Tube. The Alu-Head was drilled around the Lens...so the cold Air is cooling the Diode and the Driver behind. The Driverboard is selmade with a LM317 and Alu-Heatsink, the Poti-Resistor is designed for a output current of 1400mA, so the Power can controled from Zero to 1,4A The Voltage Source is a 2S-LiPo (7,4V)with 5200mAh and 30C, the Fan startet with connecting the LiPo, the output over the 2-way-switch (on)-out-on.....that`s it. One hour non-stop burning is without problems
2W M140 445nm Aktiv cooled Laser-2w-445nm-01.jpg

2W M140 445nm Aktiv cooled Laser-2w-445nm-02.jpg

2W M140 445nm Aktiv cooled Laser-2w-445nm-05.jpg

2W M140 445nm Aktiv cooled Laser-2w-445nm-07.jpg

2W M140 445nm Aktiv cooled Laser-2w-445nm-09.jpg

2W M140 445nm Aktiv cooled Laser-2w-445nm-12.jpg

2W M140 445nm Aktiv cooled Laser-2w-445nm-14.jpg

2W M140 445nm Aktiv cooled Laser-2w-445nm-15.jpg


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Old 07-16-2015, 07:18 PM #2
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Default Re: 2W M140 445nm Aktiv cooled Laser

Here more Pics
Attached Thumbnails
2W M140 445nm Aktiv cooled Laser-2w-445nm-14.jpg   2W M140 445nm Aktiv cooled Laser-2w-445nm-16.jpg   2W M140 445nm Aktiv cooled Laser-2w-445nm-18.jpg   2W M140 445nm Aktiv cooled Laser-2w-445nm-20.jpg   2W M140 445nm Aktiv cooled Laser-2w-445nm-22.jpg  

2W M140 445nm Aktiv cooled Laser-2w-445nm-24.jpg   2W M140 445nm Aktiv cooled Laser-2w-445nm-23.jpg   2W M140 445nm Aktiv cooled Laser-2w-445nm-27.jpg  
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Old 07-16-2015, 07:51 PM #3
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Default Re: 2W M140 445nm Aktiv cooled Laser

4 Weeks ago i changed the Driver to a fixed one with 1500mA without Poti ...... and he burns burns burns in wonderful blue
2W M140 445nm Aktiv cooled Laser-2w-m140-run02.jpg

2W M140 445nm Aktiv cooled Laser-2w-m140-run03.jpg

2W M140 445nm Aktiv cooled Laser-2w-m140-run06.jpg

2W M140 445nm Aktiv cooled Laser-445nm-m140-test-02.jpg

2W M140 445nm Aktiv cooled Laser-445nm-m140-test-03.jpg

2W M140 445nm Aktiv cooled Laser-445nm-m140-test-04.jpg

2W M140 445nm Aktiv cooled Laser-biohazard-02.jpg

2W M140 445nm Aktiv cooled Laser-biohazard-04.jpg

ok....thats enough
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Old 07-16-2015, 09:29 PM #4
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Default Re: 2W M140 445nm Aktiv cooled Laser

Another really neat build from you what's the duty cycle like?
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Old 07-16-2015, 10:47 PM #5
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Default Re: 2W M140 445nm Aktiv cooled Laser

Hi crazyspaz,

sorry, i can`t find any informations about duty-cycle on the Datasheet and the websuite of the producer...... maybe 150KHz......but not sure.

A1W Bestückung Entwicklung Fertigung- Professionelle Elektronik ( HKO1500 )

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Old 07-17-2015, 04:07 AM #6
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Default Re: 2W M140 445nm Aktiv cooled Laser

no, duty cycle is how long can you keep it on! very nice build though..
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Old 07-17-2015, 04:08 AM #7
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Default Re: 2W M140 445nm Aktiv cooled Laser

Quote:
Originally Posted by Raveman View Post
Hi crazyspaz,

sorry, i can`t find any informations about duty-cycle on the Datasheet and the websuite of the producer...... maybe 150KHz......but not sure.

A1W Bestückung Entwicklung Fertigung- Professionelle Elektronik ( HKO1500 )

I`m not Profesional with Electronic.....the mechanical side tends to be my strength.....but i learn every day a little bit more
Ah maybe I should have specified- when the term "duty cycle" is used with lasers, it refers to the run time based on heat-- for example, 60 seconds on, 30 seconds off. I would imagine yours can run continuously as there is plenty of cooling
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Old 07-17-2015, 05:06 AM #8
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Default

Quote:
Originally Posted by crazyspaz View Post
Ah maybe I should have specified- when the term "duty cycle" is used with lasers, it refers to the run time based on heat-- for example, 60 seconds on, 30 seconds off. I would imagine yours can run continuously as there is plenty of cooling
This definitely sounds better than mine! I thought he would of known what I meant! Ha
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Old 07-17-2015, 05:42 PM #9
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Default Re: 2W M140 445nm Aktiv cooled Laser

Hi,

ok.....good to know.......in some other situations meens Duty-cycle the frequency

And......it`s a Full-Time-Laser
.....An hour ago i used this Laser for branding a picture on wood...... 45 min. non-stop ...but we have here at the moment about 38°C and the Laser is allso hotter as normal....but still ok

The Fan is a 12V version and the max. DC of the LiPo is 8,4Volt .... so the Fan was not the full power. It was my first Air-cooled-Laser, the next one will be much better and is at work with other mounting of the Collimator, Power-fan and the 9mm NDB7875 445nm Laserdiode.

regards.....Raveman
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