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if populated boards are not to be used I prefer dessoldering useless parts and always drill a hole in the middle for +wire and spring bypass both springs also to minimize spring resistance we do at BLF, for high power builds

I got a bunch of these ages ago +blanks 17mm have size 18-30 OD copper shims and just solder blank to what ever diameter pill I need ;)

aw and efest 16340 if they're not fake work for me or you can get the good stuff :ROFLMAO: ultrafire and all the other ......fire 500000mAh

close, hence the nose getting in the way sometimes and fume extractor on

50+ here same eye issues got a pair of these Watchmaker Magnifier work great (y) for jobs where nose lol gets in the way have also 1 of these

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. cheers

best to get your solder braid and clean board of solder, and test with multimeter for shorts 1st. connect (-)1 lead to ground/brass ring and 1 lead to pad that has continuity with bottom pad (+)

2nd build 5 to go driver used for this build is a 1 mode 4.5A buck intended for cree led xhp70 6v. suggestion courtesy of RedCowboy (y)

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...

on the other hand if you still had 240 plus change 44's you could of attempted the worlds most powerfull handheld as these guyz did in the flashlight community with 300 xhp70.2 claiming 1.4+ million lumens. imagine a handheld laser with 1.4+million mw of blu power lol build here xhp70 monster

see your math isnt any better than mine lol 6 pack ;)+1 open

sorry my mistake double vision, back row in pics gave the impression there was 2 stacks on left and right sides hence the math boo boo :oops:

your smile just upped the price tag ~7% lol

If my calculation is right I see 440 diodes worth $33000 retail,must of got a great deal or they fell off the back of a truck lol

yep your right have another 3A 10 diode from back in the day for higher Vf diodes

Hi thought I make a comeback after a couple of years absence from lasers from the time tearing down cdr/dvdr to extract diodes. made a high power dummy-load for NUBM44 handheld project used mur1560 15A diodes I had lying around and 2 Caddock Surface Mount Power resistors 0.2ohm 25W in parallel...

Am I missing something? since dx current regulators are negative side regulators and c-mounts are case positive and battery positive goes to case dosen't the brass ring short regulator in Cree C3 mod?

I got my answer as to why my 6x got fried by high ma here and not faulty dmm measurement "When you buck on the other hand (battery voltage higher than diode voltage), the driver has to pull less current, than it gives the diode - it's the other way around... If you measure the current draw of a...

Hi guyz the 6x is dead as of yesterday,put in a new one today. basically I made a huge mistake as I found  my dmm was playing up due to battery when I first finished build. Originally set ma at 300 with test load and later when put in series with dmm on the ma setting  got reading of 260 and on...

beam for ya