Felipe La RottaHearts and stars are not my topic, but when a friend (a GORGEOUS one) asked me to help her with a lamp for her little sister, I (OBVIOUSLY) made an exception. She designed and thermoformed the plastic thing, and my work was to turn it on.
That’s when the Reed switch appears. A Reed switch does the same thing as an ordinary switch, but instead of pushing it with the finger, you trigger it with a magnetic field. That’s good for a little girl, because the ugly ordinary switch can be replaced with a “magic wand” (a.k.a a plastic thing with a magnet inside).
Off course, Reed switches have less magical applications: burglar alarm systems and proximity sensors.
Reed Switch Photo taken from Wikipedia http://en.wikipedia.org/wiki/Reed_switch
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How to use the Reed
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Here is a basic schematic that shows how to connect a Reed Switch. This circuit is only valid for small loads (a 9 volt toy for example). If you want to switch 110 volt loads like household appliances you need a relay system and proper training. You’ll find some information about mains switching on this blog.
I used LED’s for the project instead of the bulb depicted in the schematic. If you don’t know how to use them it’s very easy, I recommend you this link http://www.instructables.com/id/LEDs-for-Beginners/step1/Get-some-LEDs/. I’m too tired now, so I’ll write my own LED instructions later.
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Finished work
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You are a ‘De Facto’ electronic engineer. Keep up the good work, you’re awesome.