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260W IR Laser pump handheld?

Borislav@87 said:
Yes, I will be very careful. I decided on step-up drivers, as the accumulator that I will make again will be 24V from 18 pcs 18650 batteries. I also ordered the one from 1200W, but I am leaning towards the one from 28V /20 A. I don't know if these 2A in addition will not damage the laser. I see that the specifications give it a maximum of 19.8V and 18A. That is, at 28V per driver, it cannot take these 20A current.

I just found this on AliExpress:
BGN19.34 | 1200W 20A DC Converter Boost Step-up Power Supply Module IN 8-60V OUT 12-83V With Heat Sink 1200 W 12V to 24V 48V 1200W 20A DC

Also an option is to use two drivers connected in parallel. Because I have one of those 600W each that I use for NUBM37 and NUBM38.
Click to expand...
I am currently experimenting with a PS like the one you show on the left. I need 15 v @ 15 A for my MAX 130. I've read that running
two of these in parallel is not recommended. Mike
 
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Borislav@87 said:
I got the lenses. Everything is perfect. I still haven't adapted them to my lasers because I don't have time. For the large one, an adapter will need to be made. I plan to put it on my 500W pump.
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Where did you find the lenses? Which one works ? Mike
 
I have a MAX 130 and I discovered how to get the fiber to work. I sheared the fiber with a sharp scissors then stripped off about 3/4" of jacket.
I porered it up with about 2 amps and set fire to the casing. After blowing that out at about 1/2", I cleaned the area with pure alcohol. NOW,
when powered up, the tip gets white. Stop quickly and keep bumping the power until it no longer gets white hot! It seems that the unpolished tip melts and makes a clean emitter. It will burn a pinpoint in wood at about 1". Although I got there, I removed the fiber and am trying to get a lens which will burn at 6".
 
Hemlock_Mike said:
I have a MAX 130 and I discovered how to get the fiber to work. I sheared the fiber with a sharp scissors then stripped off about 3/4" of jacket.
I porered it up with about 2 amps and set fire to the casing. After blowing that out at about 1/2", I cleaned the area with pure alcohol. NOW,
when powered up, the tip gets white. Stop quickly and keep bumping the power until it no longer gets white hot! It seems that the unpolished tip melts and makes a clean emitter. It will burn a pinpoint in wood at about 1". Although I got there, I removed the fiber and am trying to get a lens which will burn at 6".
Click to expand...
It's best to buy a new lens. Not expensive
 
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