TABLE OF CONTENT
Title page
Certification
Dedication
Acknowledgement
Abstract
Table of contents
CHAPTER ONE
1.0 INTRODUCTION
CHAPTER TWO
Complete Circuit Description
2.0 Simplified block diagram of thee 3-way intercom system
2.1 Operation Principles
CHAPTER THREE
3.0 ICC1212C
3.1 Resistor
3.2 Capacitor
3.3 Condenser Microphone
3.4 Loudspeakers
3.5 Switches
3.6 Communication cables
CHAPTER FOUR
CIRCUITRY DESIGN AND DESCRIPTION
4.0 Description of Power Supply Unit Circuit
4.1 Description of the tone Generator Circuit
4.2 Circuit Diagram of the Three Units and Explanation
4.3 Explanation of the Switching Circuit
CHAPTER FIVE
CONSTRUCTION AND PACKAGING
5.0 Component Sourcing
5.1 Construction and Testing
5.2 Audio Amplifying Stage
5.3 Prototype
5.4 Trouble shooting
5.5 Packaging
CHAPTER SIX
6.0 CONCLUSION
6.1 Further study and Design
REFERENCE
APPENDIX
