How Telephone Works. Present by: Chongbo You SeungJae Baek Qihui Yu. Description. Telephone It is o ne of the most important inventions 1800s and an useful tool of daily communication among people.
Alexander Graham Bell's Telephone PatentDrawing, 03/07/1876.
In order to understand how telephone works, we will introduce you the simplest phone structures, and the functions and basic principle of each part.
Charge the voice coil inside speaker
Generate magnetic field around the coil
Change directions of electrical current in the coil
Coil’s polar orientation reverses
Magnetic forces move coil and attached diaphragm back and forth
After introduced what’s inside the telephone, now it’s the time to know the how the external parts work with it: