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Old 04-11-2012, 05:36 PM #17
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Default Re: 350mW 660nm laser not burning

Yes, I always check the driver before connecting and I always shorten capacitor.

EDIT:

This LD http://www.ebay.com/itm/300-400mW-br...item2a187c3262
Here says, that safe current is 400-500mA. How to exactly measure 2.5Ohm?



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Old 04-11-2012, 05:37 PM #18
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Default Re: 350mW 660nm laser not burning

ok man good luck with yor laser

where do you want to buy your laser diode???

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Yes, I always chech the driver before connecting and I always shorten capacitor.
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Old 04-11-2012, 05:48 PM #19
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Default Re: 350mW 660nm laser not burning

ebay because there is cheapest. So what about resistance measuring?
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Old 04-11-2012, 05:54 PM #20
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Default Re: 350mW 660nm laser not burning

And the problem with heatsink: laser metal housing became hot after burning out. So bigger heatsink won't help?

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Old 04-11-2012, 05:59 PM #21
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Default Re: 350mW 660nm laser not burning

how big is the heatsink??? its a little heatsink???

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And the problem with heatsink: laser metal housing became hot after burning out. So bigger heatsink won't help?
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Old 04-11-2012, 06:03 PM #22
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Default Re: 350mW 660nm laser not burning

i suggest you that buy the lpc-826 in cajunlasers.com it cost $11 (the same as ebay) and cajunlasers send from USA the only lpc-826 that i can find in ebay sends from china


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ebay because there is cheapest. So what about resistance measuring?
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Old 04-11-2012, 07:05 PM #23
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Default Re: 350mW 660nm laser not burning

Look Focusable Laser Module Host/5.6mm Laser Diode Case w/h Lens/DIY Laser Host/1pcs | eBay here you can see heatsink.
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Old 04-11-2012, 07:13 PM #24
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Default Re: 350mW 660nm laser not burning

that is not a heatsink is a module maybe you need an aixiz module and the correct lensses for red lasers and a true heatsink or if you have a broken computer get out the heatsink of the microprocesor.

P.S: if the "heatsink" of your module is a heatsink is so small

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Old 04-11-2012, 07:18 PM #25
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Default Re: 350mW 660nm laser not burning

I have a lot big heatsinks at home. The problem is that laser housing doesn't take over heat fast. When my laser diode died, housing was just warm and little later it became hot. What to do?
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Old 04-11-2012, 07:26 PM #26
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Default Re: 350mW 660nm laser not burning

belive me you need a big heatsink and if you use the lensses that come in your module maybe you cant get enough power (maybe that is the reasson because you cant burn) if you want to burn get an aixiz module and the lensses i put you, and drill a hole in a big heatsink (if you have a big heatsink you can give 450 to 500ma without damage the diode)

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I have a lot big heatsinks at home. The problem is that laser housing doesn't take over heat fast. When my laser diode died, housing was just warm and little later it became hot. What to do?
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Old 04-11-2012, 07:31 PM #27
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Default Re: 350mW 660nm laser not burning

Maybe this DVD-RW would be with needed diode? Pioneer DVR-112
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Old 04-11-2012, 07:33 PM #28
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Default Re: 350mW 660nm laser not burning

that will work is a 18x dvd burner

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Maybe this DVD-RW would be with needed diode? Pioneer DVR-112
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Old 04-11-2012, 07:38 PM #29
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Default Re: 350mW 660nm laser not burning

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belive me you need a big heatsink and if you use the lensses that come in your module maybe you cant get enough power (maybe that is the reasson because you cant burn) if you want to burn get an aixiz module and the lensses i put you, and drill a hole in a big heatsink (if you have a big heatsink you can give 450 to 500ma without damage the diode)
Why my lenses could be without enough power? They focus beam into very small dot. So if I put my housing into big heatsink it won't die?
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Old 04-11-2012, 07:40 PM #30
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Default Re: 350mW 660nm laser not burning

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Why my lenses could be without enough power? They focus beam into very small dot. So if I put my housing into big heatsink it won't die?
you have an universal acrylic lensses (minor power) if you want have the max power of your diode you need lensses for your wavelenght(i already send you the link)

it can die but you can have a large duty cicle? and you can give it more current

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Old 04-11-2012, 07:50 PM #31
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Default Re: 350mW 660nm laser not burning

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that will work is a 18x dvd burner
I'm worried about that there is not laser diode 5,6mm TO18 size
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Old 04-11-2012, 11:05 PM #32
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Default Re: 350mW 660nm laser not burning

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belive me you need a big heatsink and if you use the lensses that come in your module maybe you cant get enough power (maybe that is the reasson because you cant burn) if you want to burn get an aixiz module and the lensses i put you, and drill a hole in a big heatsink (if you have a big heatsink you can give 450 to 500ma without damage the diode)
No not necessarily. Depending on the current he is pumping through the diode its not 100% needed. The module he is using has a decent mass and wouldn't surprise me if it could take a LPC-826 at 450ma for a solid minute. That being said It always helps. He will get longer run times but hes on a budget. Burning is the most logical thing to do on his budget. If he HAS to burn he should save "his" money to buy proper safety glasses and also a good setup for parts. Skimping out on parts will lead to error. That's my word of advice. Buy from Cajun lasers, Clif ships extremely fast and his prices are the best. I've spent and easy $250-300 at his shop.

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