Dell 3115cn Service Manual page 715

String telephone
Telephone
Diaphragm
Electromagnetic induction
These electrical signals are analog signals that fluctuate in response to the volume of the voice.
Version 1 2006.11.21
Hello
Hello
N
S
Microphone
Magnet (N polarity)
Magnet (S polarity)
a. The coil in the magnetic field is vibrated.
The magnetic field around the coil is altered.
b. An electric current (alternating current) is generated in the coil.
Vibration
Electrical current
Speaker
a
6 – 2
Chapter 6 Principle of Operation (Fax)
Hello
Hello
N
S
Diaphragm
b
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