4 votes

Reed switches

1 comment

  1. skybrian
    Link
    From the article: Hackaday wrote about them too.

    From the article:

    If you've got a laptop computer or a cellphone that flips open like a clamshell, you've probably noticed that it senses when you open and close it and switches on or off accordingly. But how does it know?

    Hackaday wrote about them too.