Recent content by james34602

LOL:whistle:

CD4046 + CD 4049 IRFP460 MOSFET Half-bridge run on 220V https://www.youtube.com/watch?v=BDIB_z0R5Eg

Quote: 34. Green Lasers over 1W 520nm: Can you really see this from outer space?(lol) I may add : You cannot see the beam, because of lack of Rayleigh scattering. But could shine a target.

I have temporary eye damage on 405nm and 532nm. Consider that 405nm got shorter wavelength and higher energy and 405nm have spectrum at 380nm, it pretty danger. 10mW 405nm spend me one month from recover my eye damage, one blue-black spot on my eye. For 532nm, it's do less damage, 100mW without...

This 520nm laser seems cool, from JetLaser. It claim laser have AC plug... They use NDG7475 laser diode with 1.8-2mrad beam spread angle. If anyone have it, share your experience :D https://youtu.be/3XNpba1lxhA

Oh, such a danger scence will happen if reverse polority. DAMN!

I don't know about CO2 laser. Some question I want to ask... 1. CO2 laser company said nerver reverse polarity, but what happen if I reverse it? 2. If I don't use it long or just start a monent, is cooling really necessary?