jayrob
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- Sep 21, 2007
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Unless your trying to go for a very low power build, just get some diodes from modwerx.com or hightechdealz.com
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Look at this baby:
405nm 20mW Laser Diode 5.6mm TO 18 Package Wholesale [JG19]
Post some pictures of what you have, what you are using and someone might be able to help you.
Use the edit button and quit double and triple posting.
No point in posting the pics now I guess. The diodes that were shipped to me turned out to be faulty. Changing the input current also did not change their intensity by much. 3 out 5 diodes shipped don't light up.
Are you sure they were faulty or maybe you did something wrong?
Read tutorials, here's plenty of them
Also I did another thing with my green laser pointer diodes. They take in 3V through the driver. Now when I connected them directly to the 3v battery they worked for some time but slowly died down, but again when I connected them to the driver circuit they started working again. Now they work only with the driver circuit at 3V but not with raw 3V. This was about the locally available cheap low quality 5mW laser pointers.
Could something be missing while driving these blue laser diodes? I have seen people make laser phaser out of PS3 diodes using a 9V battery and 150 ohm resistor. They beam was so bright that one can clearly see it. This is not happening with my blu-ray diodes. I am not expecting them to magically work when I connect them to a driver but will they? I think these drivers in the laser pointers are constant current drivers. So if I power these blu-ray diodes with a driver circuit will they light up brightly? Looks unlikely though. A test bench supply should work like a constant current driver.
Did another test: connected the green diode with a 9V battery and a 150 ohm resistor just like in the kip kay laser phaser for a fraction of second. It does not work but when I connect it back to the driver it does. I think the driver is ensuring the lasing at the right current and voltage range where as just the batteries at the same voltage wont do. Could such thing could also be happening with my blu-ray diodes?
Also I did another thing with my green laser pointer diodes. They take in 3V through the driver. Now when I connected them directly to the 3v battery they worked for some time but slowly died down, but again when I connected them to the driver circuit they started working again. Now they work only with the driver circuit at 3V but not with raw 3V. This was about the locally available cheap low quality 5mW laser pointers.
Could something be missing while driving these blue laser diodes? I have seen people make laser phaser out of PS3 diodes using a 9V battery and 150 ohm resistor. They beam was so bright that one can clearly see it. This is not happening with my blu-ray diodes. I am not expecting them to magically work when I connect them to a driver but will they? I think these drivers in the laser pointers are constant current drivers. So if I power these blu-ray diodes with a driver circuit will they light up brightly? Looks unlikely though. A test bench supply should work like a constant current driver.
Did another test: connected the green diode with a 9V battery and a 150 ohm resistor just like in the kip kay laser phaser for a fraction of second. It does not work but when I connect it back to the driver it does. I think the driver is ensuring the lasing at the right current and voltage range where as just the batteries at the same voltage wont do. Could such thing could also be happening with my blu-ray diodes?
But that is like a 1W phaser. I believe 20mW beam is also quite noticeable. The seller I purchased from has however denied any replacement saying no warranty with these lasers.Hey check out how that phaser is done right:
jayrob made the original phaser mod... kipkay then stole it
also 20mW is not noticeable without fog
Ok well I guess you probably also know that the driver can hold a voltage charge in the cap, that can kill the diode when you connect it...
Other than those two main things (that or ESD), it's not a complicated thing to do. It should be easy to light it up with about 35mA's. Maybe they got damaged during harvest?? Or were they loose diodes?
Either that or it is more powerful than the old PS3's, and does not even lase at 35mA's. Maybe it is more like a PHR??
But a PHR should begin lasing around 25mA's, and a 6X around 35mA's or so...
Didn't the company you bought them from have a data sheet of some kind for connection and current?
Actually KipKay made a video for show. And he accomplished his goal. Many views/add revenue...
I followed his idea (as others have), and made a real laser with it. His didn't have a driver, didn't have sound, couldn't focus, no heatsinking, no power, etc...