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I received 2 of mine. One is 110mW, the other 135mW. They are powered by 10440 Li-ion. I think it is maximum power that 10440 could supply to IR pump of this DPSS. Focus spot is relatively large but not bad. I recommend this small but powerful green laser! SHIN

Hi. Jayrob. Didn't it start flickering at near 1.5A? SHIN

Groove 2 driver of drlava is good for infrared LD! But because of positive case, there is insulation problem of host. So I think AMC 7135 is better.

I think you should include the voltage-drop at the resistor in the test load. It doesn't matter at relatively low current, but higher current causes the significant increase the drop at the resistor and serial diodes(>0.7V). And the temperature worsens the drop. So drlava suggested using red...

I wish this might help some...as my cases.:) http://laserpointerforums.com/f65/list-445nm-diodes-51897-5.html http://laserpointerforums.com/f51/dummy-load-high-current-2a-test-load-3a-52372.html SHIN

Awesome laser! 1.2W at 850mA. Same as my two 445nm. I can advise that you'd better build next one using a "high current test load".

Hi. jmgallego. 2A/3A test load works fine. Thanks. Scanty is the voltage drop of 200milliohm resistor of 3A setting. SHIN

Re: Dummy load for high current - 2A test load It is likely that LD will need higher current in the future. I think high current will make a significant amount of voltage drop at the resister of a test load, and there will be more voltage drop in 1Nxxxx diode.(0.8V, 0.9V...) And even more, if...

I knew the reason why my A140s were " freaks" at 850mA. I apologize for the data of A140s and for my illiteracy. Standard blue test load uses 6 of 1N4001s and 1ohm resister. And the voltage drop of A140 is known as 4.1V. I set the current with this test load. But the voltage drop was not...

Re: Dummy load for high current - 2A test load Thank you!! drlava.:bowdown: Now I know the reason of my "freak" 445nm!! And I can make 3A test load without 16 or 25 of 2W 1ohm resisters.. SHIN PS) drlava. Would you mind making "v6" that can kill 445nm LD?

Re: Dummy load for high current? I made my 2A test load today after this thread: http://laserpointerforums.com/f38/test-load-44348.html I appreciate HIMNL9 and many members for sharing the information.... It was made with: 7 of 1N5404 (3A, 0.7V voltage drop) 4 of 2W 1ohm resister(=1 of 4W...

Thank you. Morgan. And thank you. Kevlar. I can't wait for "buyable" high current test load...because my another A140 is on its way... SHIN

Hi. Morgan My specialty is that away from electronics... Is it OK that test load for 3A can be built after the rkcstr test load, replacing 1N4001 by 1N5401? SHIN

Hi. I agree... High current and heat could cause the aberration of the readings except the output power measurement. I think A140 can't be killed with microboost or v5 if there is some heatsink. I'm building high current test load with 1N5401s and 3W 1ohm. And I wish there will be "v6"...

I think good news is "still staying alive", even if there are obscure problems in the high current setting. So I have a plan to build next one according to the power of 1.2W, and a plan to build with 3 or 4 of amc7135(310-350mA). SHIN

Hi. laser_freak. There is little difference between the output power measured at 2cm and that at 1m. Thermal additive effect from adjacent "hot" laser is scanty.(<10mW compare to total output 1200mW) I double-checked all the procedure of my "freaks" but I couldn't find the reason. I wonder if...

Ultrafire protected 18650 exploded.... I saw this at: Ultrafire 18650 3000mA exploded - CandlePowerForums In these days, especially after the appearance of high power laser, the usage of bigger battery, rapid exhaustion and mismatch of battery because of host design, is usual. I think laser...

Re: Dummy load for high current. Hi. ZRTMWA. I have 3 of dummy loads. One is made by myself. Two are purchased. I tested all the three for setting. All 1N4001s were too hot to touch. I will set the current of next one as drlava suggested. But I heard there is a problem of voltage-drop...

Hi. I have some questions for dummy load: Can I use dummy load at about 1A of current? Is there dummy load for high current? When I set the current of driver (V5, microboost) and the current was near 800mA, the serial diodes(1N4001?) of dummy load became very hot and my multimeter showed the...

Hi. doc. PM and paypal sent for another 5. SHIN