Please help

[lukeraf21]

Ok in this video YouTube - ‪DIY: How to Modify a Green Laser Pointer into a Burning Laser‬‏ he has 2 wires on the module and he desolder them and puts a spring on. i dont get how when theres the 2 wires (positive and negative) it can run just through the spring. please help

 

[lasersbee]

The case of the Pointer and Laser Module is used as the return
path of the current like 99% of Laser pointers..

Jerry

 

[lukeraf21]

but is there a wire connecter to the case where the red wire should be?

 

[Trevor]

Current flows through the case of the laser diode and through the die. No wire required.

-Trevor

 

[qumefox]

Or put another way.. The case of the laser IS the other wire.

 

[Tech_Junkie]

There are 3 pins on most diodes. Pos, neg, case. They just ground the pos pin of the diode on the case, the case is pressed into a heat sink, which is pressed into the host, which the pos spring connected. Its a complete circuit. If you wanted to use just the module you'd need to hook the pos to the heat sink on the module.

 

[Trevor]

Or put another way.. The case of the laser IS the other wire.

At the time, it seemed like I phrased my post better. :thinking:

I'll leave it for posterity. :crackup:

-Trevor