DESIGN AND CONSTRUCTION OF AN AUDIO AMPLIFIER
Abstract
ABSTRACT
This work is titled the design and construction of an audio Amplifier. An audio Amplifier is an electronic device that amplifies low-level audio signals, such as those from microphones, instruments, or audio sources, to a level strong enough to drive speakers, headphones, or other output devices, enabling clear and quality sound reproduction. It is design to meet up with the amplification demand in homes, offices, theatres, industries. An audio Amplifier low-power audio signals (signals composed primarily of frequencies between 20 - 20 000 Hz, the human range of hearing) to a level suitable for driving loudspeakers and is the final stage in a typical audio playback chain.
This device is designed to increase the amplitude of a weak audio signal to drive a speaker or other output device, to enhance sound quality by reducing noise, distortion, and other unwanted artifacts. In audio amplifiers the load is usually the dynamic impedance presented to the amplifier by a loudspeaker, and the function is to maximize the power delivered to the load over a wide range of frequencies.
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