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I was just browsing around and happened to stumble upon some 1.25A - 1.5A 445s on here and noticed a bunch of people debating what to use for drivers. Some were saying why not use a LM338 or LM317 instead of, for example, a FlexmodP3.... the argument was mainly that the driver had other safety...

Awesome. :D I'll post results when I finish up. Thanks for the help

:) ok so back to the other topic, no reason to use a pot to lower it below 380mA then?

The aixiz module is going to be inside a much larger heatsink that I'm sure disperses heat better. That HS was for the LM317 itself bc I heard that it is the other component that gets hot. Is this more uselessness?

Ok don't hate me for this but I can't upload a pic bc I'm on my iPhone so I uploaded one to Facebook ha. The pic shows the heatsink in relation to the LM317. The LD heatsink is quite large and it isnt really a concern I don't believe. Oooooold PC parts Gideon Burnard Cooper's Photos | Facebook

Only reason I thought I may need the pot is bc it's a lpc-815 and I was gonna use a 3.3 ohm resistor, setting it 380mA max and use the pot to turn it down if the hestsinks didn't do a good enough job. Still going to be my first build so I didn't know. But if you guys think I don't need it then I...

Ohhhhhh :o That definately makes since. Gonna go with the pot first then since it's rated at 3W

About to get all my goodies in to make a DDL driver. Thought i had all my thoughts together when I just hit a kink. I've become unsure if I should put my pot right after the LM317 and before the resistor(s) like in this guide that so many people mention to beginners : Laser driver - It can be...

Oh, and the output for the two lines are: +5v /32A and +12v /16A.

Awesome. Oh i'll definately put it on a test load first. I already learned the hard way.

qumefox: I measured the voltage from the 5v and 12v and the 5 was a steady 5.22v and the 12v was steady at 12.02. Guess its ok then. Thanks anselm for the link, that helped me out a lot actually for a totally different reason. Helped clarify the - and + voltage. It seems that the guy in the...

Yeah its a PC PSU. I connected the 5w green (some called it the PSU-ON) to ground. Does that take care of the load on the PSU you mentioned or do mean a load on that particular lead?

well i wouldnt have even noticed it if you both hadnt went back and forth on it for a bit, so :thanks:

the opposite direction? That sounds like its getting really intense. So, you couldnt use + voltage and - voltage to form a circuit then could you?

Bleah :-/ yeah I seemed to have learn that a little late. Didn't catch that bit on the power supply. I just assumed all the current was the same. Rookie mistake. Another thing I am confused about is the (-) voltage on the ouput.. Such as -5V /.3A -- what would a negative voltage do? :P

I'll have to make a driver then because the ones I bought are too small for my amateur hands to work with. Thanks again for the help. If only I weren't at work, I would have asked prior.

Whoops :P. Well then, know where to get a good deal on a sled?

Crap. :-/ so the CCDs that are made out of the LM317s and such would have saved from this?

So 20A.... That bad?

Says the dc output is +3.3V /20A