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Well, I live in a descent old kind of house with old wiring and connections but a fascinating thing in my house is a 2 way switch (I don't even know if it is called so).
The arrangement is like we have 2 switch for same lamp and when they are in same position (both ON or both OFF) the bulb glows otherwise don't.
I want to know the circuit diagram of the composition and how it works.
I know that there are no transistors or capacitors or inductors but just straight wire connection and it's amazing.

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These are diagrams describing positions in what is called the common system, or traveler system that you seem to be describing. Images from Wikipedia; https://en.wikipedia.org/wiki/Multiway_switching#Traveler_system

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  • $\begingroup$ thank you so much sir for the response.. it was really helpful.... $\endgroup$ – yash krishnatery Jan 26 at 4:18

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