Design, Construction and Testing of JP Low Cost Wireless Public Address System

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International Journal of Research and Innovation in Social Science (IJRISS) | Volume V, Issue IV, April 2020 | ISSN 2454–6186

Design, Construction and Testing of JP Low Cost Wireless Public Address System

 JP.C. Mbagwu1*, J.O. Ozuomba1 and Z.L. Abubakar2
1Department of Physics, Imo State University, Owerri, Nigeria
2Brigadier General Abubakar Zakari Logun, 32 Artillery Brigade Owena Cantonment Akure, Ondo, Nigeria
*Corresponding Author

IJRISS Call for paper

Abstract— It has become inevitable there would be communication and due to the extrinsic limitation of the human voice, the public address system came to being. A public address or “PA SYSTEM” is an electronic amplifying system with a mixer, amplifier and loudspeakers, used to strengthen a given sound, e.g. a person making a speech, pre-recorded music, and distributing the sound throughout a venue. The human voice or sound signal is passed through a microphone, which converts the sound energy to electrical energy, the electrical energy signal being transmitted is being received and amplified by the amplifier circuit. The amplifier’s output is fed into the loudspeaker which converts the electrical energy back to the original form but in an amplified state. Based on the procedures adopted, and the tests carried out, the specific findings include a range of 100.2MHz of transmission from a 9V DC battery, and a clear sound produced from the microphone. The work indicated that the practical JP Low cost wireless public address system requiring a low power can be designed and constructed.
Keywords: Microphone, Electronic amplification system, Public address system, Receiver and Radio