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Three-Way Switches


	Three-way switches allow a light to be turned on or off independently at two different locations—for example, at the top and bottom of a staircase. Each switch has three terminals. The circuit is arranged so that the light is on when both switches are in identical configurations and off when they are in opposite configurations.


	Contributed by: S. M. Blinder
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Check out the website "How Stuff Works".

Electric Circuit (ScienceWorld)

"Three-Way Switches" from The Wolfram Demonstrations Project
http://demonstrations.wolfram.com/ThreeWaySwitches/

Contributed by: S. M. Blinder

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