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Sparklyn The Design and Construction of a 40 Watt Hi-Fi Amplifier
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The Design and Construction of a 40 Watt Hi-Fi Amplifier


This page presents an excerpt of the research material, providing a comprehensive overview of the study. It includes the Preliminary Pages, Table of Contents, Abstract, Chapters One to Five, and References, making it accessible and informative for students, researchers, and other readers interested in the topic of this study. Acknowledgement is also included, expressing gratitude to the individuals, institutions, and resources that contributed to the successful completion of the research, with materials and information sourced from the online platform sparklyn.com.ng, which provided valuable academic support.


ABSTRACT


The early transmitter for radio broadcasting is so big and bulky that they do occupy numerous spaces. The circuitries are mainly designed with valves, which are big in sizes.

With the advent of semiconductor materials such as transistors electronic equipment are now becoming miniaturized such that small transmitters are now becoming handy and compact.

In line with this we choose to design a complete radio broadcasting equipment tat is compact and existence of semiconductor materials.

The system units are of two categories namely: audio console for the processing and mixing of musicals is basically a condenser microphone.

The transmitter unit is where the center frequency is provided. All these were designed to be in compact and small manner. This project is aimed at serving a community using a small and compact radio broadcasting equipment with a power watt of 1 watt a community of 1 kilometer in radius should be covered comfortable and the audio production very clear unlike the common noisy FM microphone project.



1.0 Introduction

High power amplifier are usually quite costly and usually beyond the easy reach of most audio enthusiastic (and Hi-Fi buffs) who then have to remain satisfied with those small 6 watt amplifiers. Well, with this introduction to us and to electronics, things should change. Well this low cost Hi-Fi amplifier that delivers ear chatting and thundering output of an unbelievable forty watts. The unique features of this circuit are.

  1. Low cost — The basic criteria
  2. Compact size
  3. Very low transient noise on “power on” and low THO
  4. Effective Bass and treble controls
  5. Automatic thermal shut down system it switches off the amplifier in case of overheating
  6. Load damp protection in built.

The circuit uses a high power amplifier chip viz the LA 4440. The circuit is quite self explanatory. The input is coupled by a small value capacitor. The output is taken through a block terminal and fed to the speaker.


CHAPTER TWO

LITERATURE REVIEW


2.1 Introduction

This chapter focuses on the review of related literature. A literature review presents current knowledge, as well as theoretical and methodological contributions, related to The Design and Construction of a 40 Watt Hi-Fi Amplifier. It documents the state of the art on the subject under study and provides a comprehensive survey of existing literature. In this research work the literature review includes the conceputal review, theoretical framework, the review of related literature …


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