Description : http://www.lasereshop.com/green-laserpointer/p-3.html
In this blog I will teach you step by step how to build your very own burning laser pointer 5000mw . Unlike other popular ways of building your own burning laser I will show you how to do it properly to ensure a long and healthy life for your new laser.
There are several reasons for building a burning laser this way instead of just connecting it to batteries and having it die in a couple days or months. The best reason is that it will be just a bit more powerful. But the main reason for building this circuit is to regulate voltage and current. As simple as connecting your diode to a set of AA batteries is. You must realize that that you are feeding the diode too much current. It is also not protected from other dangers such as voltage spikes. This driver circuit will take care of that.