Gryphon
0
- Joined
- May 4, 2009
- Messages
- 2,318
- Points
- 113
I'm joining the big boys now! My NUBM35 blaster was fun but now I've finally made it into the +100W handheld club. The laser won't win any beauty pageants but it was made with simplicity in mind. A 3/4" aluminum square tube was run along the top and bottom of the laser and make up the frame of the laser, everything else just bolts up to that in what I thought would be the most effective use of the space.
The array sits on top of a 1/2" thick block of copper and it's attached to one of the biggest Noctua finned heatsinks I could find. The fan inside is a massive 140mm fan rated for 308cfm, I don't know how accurate that is, but it really screams!
The MOSFET for power switching is an IRFP250N and it stays quite cool even without the heat sink. Next to it is a DC-DC converter to provide the 12V for the 3 fans. On the right are four LM338's set up as current regulators providing 3A to the array, there's one per row.
The batteries are two 4S 6500mAh packs that are good for 100C continuous discharge and are wired in series.
The push button trigger controls the MOSFET for firing the laser and the blue led switch is the safety.
The beam is visible outside in the daytime!
I DECLARE THIS YARD BLUE
The camera sensor gets pretty blown out by all the blue light but as soon as it's switched off you can see the jet of flame coming out of the 2X4.
Looks at those beams!
The array sits on top of a 1/2" thick block of copper and it's attached to one of the biggest Noctua finned heatsinks I could find. The fan inside is a massive 140mm fan rated for 308cfm, I don't know how accurate that is, but it really screams!
The MOSFET for power switching is an IRFP250N and it stays quite cool even without the heat sink. Next to it is a DC-DC converter to provide the 12V for the 3 fans. On the right are four LM338's set up as current regulators providing 3A to the array, there's one per row.
The batteries are two 4S 6500mAh packs that are good for 100C continuous discharge and are wired in series.
The push button trigger controls the MOSFET for firing the laser and the blue led switch is the safety.
The beam is visible outside in the daytime!
I DECLARE THIS YARD BLUE
The camera sensor gets pretty blown out by all the blue light but as soon as it's switched off you can see the jet of flame coming out of the 2X4.
Looks at those beams!