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1st nubm44 build of 7

nmbusa

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Joined
Dec 23, 2008
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Points
18
hello to ya all,after many years away from the laser hobby playing around with zvs drivers(induction heating and HV) and flashlight builds thought I go at it again.
A friend gave me his box that plays pictures on walls and I took it apart for its 7 nubm44 just finished my 1st build of 7.
and a couple of pics


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nmbusa

Member
Joined
Dec 23, 2008
Messages
82
Points
18
new build 3rd C8 host, a few more to come
this is based on the good old LM338 set at 5A based on this nice mod LM350 from back in the day,older members would remember.

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cheers
 

RedCowboy

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I have some extra 44's and was thinking about c-lens correcting and knife edging several, even just 3 or 4 which would yeild a much better quality beam bundle than the nubm31/36 etc... arrays.
What did you think of the sealed light engine, pretty cool huh ?
I wonder if Jordan has a pile of those AR coated mirrors......
 

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nmbusa

Member
Joined
Dec 23, 2008
Messages
82
Points
18
new 44 build just finished, call it a pocket rocket lol output just shy of 7W I believe as dont have a laser meter.
set at a lowish 4.7Amp with new test load method 100W 1Ω power resistor and new UNI-T DC clamp meter
homemade brass heatsink and driven from a modified ebay driver.
2-3 builds will be up for grabs soon anyone interested shoot me a pm

cheers

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RedCowboy

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Very nice, of course your duty cycle will be short and the 18350's will get drained fast, however your modified driver has a lower cutoff than others so will help you get more runtime. (y)
 

nmbusa

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Dec 23, 2008
Messages
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Points
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Very nice, of course your duty cycle will be short and the 18350's will get drained fast, however your modified driver has a lower cutoff than others so will help you get more runtime. (y)
thx Red for your input on this so called "chinese driver" not bad for 3 bucks.
I think it also has a slow ramp up on high.
small host small run time as its not for "continuous 24/7 use"
 
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nmbusa

Member
Joined
Dec 23, 2008
Messages
82
Points
18
I have some extra 44's and was thinking about c-lens correcting and knife edging several, even just 3 or 4 which would yeild a much better quality beam bundle than the nubm31/36 etc... arrays.
What did you think of the sealed light engine, pretty cool huh ?
I wonder if Jordan has a pile of those AR coated mirrors......
was wondering what that was havent taken mine apart yet
 

nmbusa

Member
Joined
Dec 23, 2008
Messages
82
Points
18
new 44 build pocket missle set at 4.7A cheers

 

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