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2. STRUCTURE OF A TELEPHONE
A telephone consists of a receiver (speaker), a transmitter (microphone), a
voice circuit, a dial, a bell (speaker), and a hook button.
Of these parts, the parts that play the most important roles are the transmit-
ter and the receiver. The transmitter converts human voice to electrical sig-
nals, and the receiver converts the electrical signals from the other party to
voice.
Here, let's learn about the mechanism of these parts and the roles that they
perform.
Receiver
Transmitter
Fig. 1-5 Handset
BASIC OF TELEPHONE
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ït
çi
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