jayrob
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- Sep 21, 2007
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I took a day off from building kits today...
It gave me a chance to build my SolarForce L2P 445 laser.
This bad boy has a massive heatsink that starts with a 2" long piece of 6061 aluminum 1 1/8" in diameter!
I set a V5 FlexDrive at max current, and used a 1/2" round aluminum heatsink for the driver. (Arctic Silver thermal adhesive to the 5 pin chip - and also the 6 pin chip for more support)
Of course you don't have to max it out like I did, but a Micro Boost at 1075mA's would be nice in there without a special driver heatsink...
Power Measurements:
* A-140 diode from Dave - See here!
* Set at 1470mA's...
* Battery current draw - 2200mA's
Recommended battery:
AW 18650 Protected 2600 mAh Rechargeable Lithium Battery - New Version
This puts out 1450mW's with a 405-G-1.
But I have an AixiZ 445 lens in there which starts out at 1250mW's...
During the 1 minute test for stability, it slowly drops in power. (as expected - these diodes are very temperature sensitive)
It settles at 1150mW's (AixiZ 445 lens) after about 40 seconds and stays there for the rest of the 1 minute test.
The driver is stable with this set up at least for 1 minute run times. (would probably go longer yes... but I did not test for longer)
I have always been used to 1 minute duty cycles just like your supposed to do with green pointers...
This is one mean fire starting bad to the bone blue blaster!
SolarForce L2P Kit available!
http://laserpointerforums.com/f64/fs-solarforce-l2p-kit-18650-host-massive-heatsink-53746.html
It gave me a chance to build my SolarForce L2P 445 laser.
This bad boy has a massive heatsink that starts with a 2" long piece of 6061 aluminum 1 1/8" in diameter!
I set a V5 FlexDrive at max current, and used a 1/2" round aluminum heatsink for the driver. (Arctic Silver thermal adhesive to the 5 pin chip - and also the 6 pin chip for more support)
Of course you don't have to max it out like I did, but a Micro Boost at 1075mA's would be nice in there without a special driver heatsink...
Power Measurements:
* A-140 diode from Dave - See here!
* Set at 1470mA's...
* Battery current draw - 2200mA's
Recommended battery:
AW 18650 Protected 2600 mAh Rechargeable Lithium Battery - New Version
This puts out 1450mW's with a 405-G-1.
But I have an AixiZ 445 lens in there which starts out at 1250mW's...
During the 1 minute test for stability, it slowly drops in power. (as expected - these diodes are very temperature sensitive)
It settles at 1150mW's (AixiZ 445 lens) after about 40 seconds and stays there for the rest of the 1 minute test.
The driver is stable with this set up at least for 1 minute run times. (would probably go longer yes... but I did not test for longer)
I have always been used to 1 minute duty cycles just like your supposed to do with green pointers...
This is one mean fire starting bad to the bone blue blaster!
SolarForce L2P Kit available!
http://laserpointerforums.com/f64/fs-solarforce-l2p-kit-18650-host-massive-heatsink-53746.html
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