Canon fax basic 2000 서비스 매뉴얼

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BASIC OF TELEPHONE

2.2

Receiver (Speaker)

The receiver acts just like an electromagnet. The receiver creates voice

waves by changing magnetic force, which move a vibrating diaphragm

according to the current strength.

Fig. 1-7   Receiver

2.3

Voice Circuit

When the transmitter and receiver are connected as shown in the Fig. 1-8

to make a voice circuit, voice can be transmitted in both directions along

the two wires.

Fig. 1-8   Two-way Circuit (Two Wires)

Armature

Permanent magnet

Diaphragm

R

R

T

T

Calling party

Exchange

Called party

T: Transmitter

R: Receiver