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CHAPTER ONE
INTRODUCTION
PREAMBLE
These days’ people normally have to address large gathering at a time and an efficient means of communication has to be used, if not, the massage would not be understood. This fact led us into this project which was explained fully in due course. The project is
DEFINITION OF TERMS
AMPLIDIER
The basic principle in the operation of an audio amplifier involves the increase of a low signal to a very high spinal so that it is head by human ear. The increase of a low spinal involves the use of transistor. The transistor is an active device in amplification, and plays a very big roll in the design and contraction, of the amplifier. The success in the use of transistor depends on how well the transistors are based. The method of biasing transistors are discussed as we progress in this write up.
SPEAKER (EXTERNAL LOUDSPEAKER)
A speaker can be defined as a transducer used to convert electrical signals into a non- electrical signal I .e (sound). It is, mage up of a permanent magnet and diagram which vibrate the sounding air in accordance with the electrical signals passed through it. It is the cast stage in the functioning of the system, where the amplified signal is heard by the listener. A times speaker is said to be an electro-acoustic frequency signal to corresponding sound signals. It converts the varying amplitude dc into sound wave.
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SIMILAR ELECTRICAL ENGINEERING FINAL YEAR PROJECT RESEARCH TOPICS
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1. DESIGN AND IMPLEMENTATION OF GAS DETECTION SYSTEM
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2. DOMESTIC REMOTE CONTROL FOR FANS, LIGHTING POINTS AND SOCKETS
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3. APPLICATION OF ARTIFICAIL NEURAL NETWORK FOR ENHANCED POWER SYSTEMS PROTECTION ON THE NIGERIAN 330kV NETWORK
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4. CONSTRUCTION AND DESIGN OF DISTANCE PROXIMITY SENSOR USING LDR AND LED
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5. EXPERT SYSTEM FOR LOCAL AREA NETWORK TROUBLESHOOTING
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6. DESIGN AND CONSTRUCTION OF AN AC/SOLAR RECHARGEABLE LANTERN
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7. REMOTE PATIENT MONITORING SYSTEM
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8. THE DESIGN AND CONSTRUCTION OF A 220 / 12 VOLTS SINGLE PHASE STEP-DOWN TRANSFORMER
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9. DESIGN AND CONSTRUCTION OF A METAL DETECTOR
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10. CONSTRUCTION OF BATTERY CHARGE CONTROL FOR PHOTOVOLTAIC SYSTEM
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