Need DIY Hall Sensor magnetic power switch pics

Hi. I have been up and down the forum and over Google but I am not finding much so I'd kindly like to ask if you guys can please show some pictures of a basic DIY Hall Sensor magnetic power switch on a DIY light and also please add info if yours is not on a ring.
If possible I would really like to see how this switch will work on a homebuilt Maglight especially if used as a canister dive light.

The request is because of not finding any other options via Google for switches used on the head of a dive light with a strong LED like the XHP70.

Thanks Uwe

Hi there!
First of all I would suggest to use a reed-switch. This is like a switch which activates when a magnet is close by. Second a reed-switch isn't that powerful in it's switching capabilities (not much current) that's why you should use a n-channel Mosfet (for example IRFZ44N) with gets switched on with the reed-switch. (the reed-switch pull the gate of the mosfet high when activated, don't forget a pull down resistor from gate to ground
good luck

/steve/ said:

Hi there!
First of all I would suggest to use a reed-switch. This is like a switch which activates when a magnet is close by. Second a reed-switch isn't that powerful in it's switching capabilities (not much current) that's why you should use a n-channel Mosfet (for example IRFZ44N) with gets switched on with the reed-switch. (the reed-switch pull the gate of the mosfet high when activated, don't forget a pull down resistor from gate to ground
good luck

Click to expand...

Steve man thanks. You painted a much better picture for a noob than the other posts that just say "which mosfet". I did not know that a mosfet is something that can handle the strong current.

Can someone please tell me what words to use if I want to search for a pre-made reed switch "actuator". IOW a prefabricated switch containing a magnet on a slider -to attach on the outside of the host.

Taskled.com sells hall switch boards for flashlights. They are so cheap it's not worth trying to DIY.

Might want to check out these switches, I think they sell them at mouser. - http://magnasphere.com/switch-products/switch-series/