Sound Apmlification Tarn Taran (G) Taran Taran
Sound Apmlification Tarn Taran (G) Taran Taran
Sound Apmlification Tarn Taran (G) Taran Taran
SCHOOL,TARN TARAN
INTRODUCTION
Amplifier is device for increasing the amplitude or power of an electric
signal. It is used to amplify the
weak electric current drawn from the antenna of a radio receiving set, the
diminished current in a long
distance telephone circuit, the electrical signal representing sound in a public
address system and so on.
WORKING
Typically, small variations in the input voltage
produce corresponding but much larger variations in
output voltage. The ratio of these voltage changes is
called Amplification Factor.
COMPONENTS USED
Firstly, Electron Tubes were used as a major
component for amplification. Now a day Transistors
have largely replaced electron tubes in most common
devices. These elements exhibit a high amplification
factor, operate without distortion over a wide
frequency range and can be made extremely small.
These days thousands of transistor amplifiers can be
placed on a very small Silicon Chip.
CLASSIFICATION
Amplifiers are classified by the Type of Electrical elements in the circuit or
on Wide Frequency Ranges.
REFERENCES
Encarta Encyclopedia
S.G.A.D.GOVT.GIRLS.SEN.SCHOOL,TARN TARAN