Switch Mode Audio Amplifier

Mohamad Hadzry, Othman (2005) Switch Mode Audio Amplifier. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

In fulfilling the condition to be awarded the Bachelor of Degree, the Switch mode audio amplifier lkW has been chosen as the title for the undergraduate project. This project involves a complex circuit design based on the audio amplifier switching circuit, which is combined with high gain linear amplifier circuit, to achieve the 1 000 watt output target. This system can be applied or implemented in any audio electronic devices that give out a low power output. A class D amplifier will be used at the Switch-mode stage, which is the first stage of the system. This system may be connected to the input of the low power audio system's output. Such connection can be found in devices such as mp3 player, walkman and Discman. This audio amplifier is connected to the five band frequency filter or better known as the equalizer. The purpose of this filter is to filter and control gain at the set five band frequency in order to obtain a better output and with less noise. After the filtering process, circuit will then be connected to a load of an 8 (Ohm) speaker. The filtering and noise control process will determine whether the speaker can carry a high output.

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