Merchant, F. W. (Francis Walter), 1855-1937, Chant, Clarence Augustus, 1865-1956 · Toronto : Copp Clark · leaf 466
The currents alternatelystrengthen and weaken the magnet of the receiver and thusset up vibrations in the diaphragmsimilar to those in the diaphragm ofthe transmitter. The Bell receiver is very sensitive andis still used on all telephone systems, buta mag-net of the horse-shoe type is nowusually… … Fie. 551.—The microphonetransmitter used in theBell system. 456 INDUCED CURRENTS At the back of the mouthpiece is a metallic diaphragmD, B is a, carbon button attached to the diaphragm, and Banother carbon button attached to the frame of the instru-ment, opposite to B. The space between the carbon…
Physics
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