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There has been a greater attempt to solve differential equations by numerical methods. In this pa... more There has been a greater attempt to solve differential equations by numerical methods. In this paper, we will treat the problem of system of two equations of first and second orders by using Newton's Interpolation and Aitken's Methods and we will compare the results with Some Numerical Methods as the method of Euler method, Euler Cauchy method (Modified Euler Method) and Range Kutta method.
JP.C.Mbagwu, 2020
It has become inevitable there would be communication and due to the extrinsic limitation of the ... more 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.
A rapidly growing demand for the use of Frequency Modulation (FM) transmitter exists within insti... more A rapidly growing demand for the use of Frequency Modulation (FM) transmitter exists within institutions and individuals. The FM transmitters are however a complex equipment demanding high power supply, high voltage system design, critical maintenance and exorbitant price. These problems of the transmitter constitute major impediments to institutions and individuals that may wish to adopt radio broadcast as means of electronic media. This study was therefore carried out to design and construct an FM transmitter that is of low cost, and simple in maintenance, efficient in use and yet operating on low power supply. The FM transmitter is designed to be received at a range of about 100metres in free air. The transmitter has a capacitor microphone which picks up very weak sound signals, a transistor, resistors, inductor, and capacitors. The design procedure involves the modification of an output of the transmitter. Based on the procedures adopted and the tests carried out, the specific findings include a range of 102.2MHz of transmission from a 9V DC battery. The work indicated that the practical frequency modulated (FM) transmitter requiring a low power can be designed and constructed.
Mbagwu JohnPaul, 2019
Electronics communication systems consist of three major aspects; the receiver, the channel and t... more Electronics communication systems consist of three major aspects; the receiver, the channel and the source, which is the transmitter. A transmitter is an electronics device, which, with the aid of an antenna, propagates an electromagnetic signal such as radio, television or other telecommunications. A rapidly growing demand for the use of Frequency modulation (FM) transmitter exists among individuals and institutions. The FM transmitters are however complex equipment demanding high power supply high voltage system design critical maintenance and exorbitant price. These problems of the transmitter constitute major impediments to individuals and institution that may wish to adopt radio broadcast as means of electronic media. The study was therefore carried to design and construct an FM transmitter that is a low cost digital fm transmitter that is less in complexity, simple in maintenance, efficient in use, yet operate on low power supply. The study was to design and construct a 0.63 watt FM transmitter to be received at a range of about 100m in free air. Research and development (R &D) was used for the study, the necessary tools and materials were acquired. In our design procedure we used a ceramic capacitor in place of variable capacitor to facilitate tuning to desired frequency. Based on the procedure adopted and the tests carried out, the specific findings include, appreciable range with stable frequency of transmission obtained on power source devised from 9V lead acid battery. Various instructional applications and mass production strategies were outlined. The successful completion of this study has indicated that practical frequency modulated FM transmitter requiring low power can be designed and constructed. Though appreciable range of FM transmitter on low power supply has been achieved in this works, further studies in areas of signal coupling technique need to be carried to improve the range of transmission.
There has been a greater attempt to solve differential equations by numerical methods. In this pa... more There has been a greater attempt to solve differential equations by numerical methods. In this paper, we will treat the problem of system of two equations of first and second orders by using Newton's Interpolation and Aitken's Methods and we will compare the results with Some Numerical Methods as the method of Euler method, Euler Cauchy method (Modified Euler Method) and Range Kutta method.
JP.C.Mbagwu, 2020
It has become inevitable there would be communication and due to the extrinsic limitation of the ... more 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.
A rapidly growing demand for the use of Frequency Modulation (FM) transmitter exists within insti... more A rapidly growing demand for the use of Frequency Modulation (FM) transmitter exists within institutions and individuals. The FM transmitters are however a complex equipment demanding high power supply, high voltage system design, critical maintenance and exorbitant price. These problems of the transmitter constitute major impediments to institutions and individuals that may wish to adopt radio broadcast as means of electronic media. This study was therefore carried out to design and construct an FM transmitter that is of low cost, and simple in maintenance, efficient in use and yet operating on low power supply. The FM transmitter is designed to be received at a range of about 100metres in free air. The transmitter has a capacitor microphone which picks up very weak sound signals, a transistor, resistors, inductor, and capacitors. The design procedure involves the modification of an output of the transmitter. Based on the procedures adopted and the tests carried out, the specific findings include a range of 102.2MHz of transmission from a 9V DC battery. The work indicated that the practical frequency modulated (FM) transmitter requiring a low power can be designed and constructed.
Mbagwu JohnPaul, 2019
Electronics communication systems consist of three major aspects; the receiver, the channel and t... more Electronics communication systems consist of three major aspects; the receiver, the channel and the source, which is the transmitter. A transmitter is an electronics device, which, with the aid of an antenna, propagates an electromagnetic signal such as radio, television or other telecommunications. A rapidly growing demand for the use of Frequency modulation (FM) transmitter exists among individuals and institutions. The FM transmitters are however complex equipment demanding high power supply high voltage system design critical maintenance and exorbitant price. These problems of the transmitter constitute major impediments to individuals and institution that may wish to adopt radio broadcast as means of electronic media. The study was therefore carried to design and construct an FM transmitter that is a low cost digital fm transmitter that is less in complexity, simple in maintenance, efficient in use, yet operate on low power supply. The study was to design and construct a 0.63 watt FM transmitter to be received at a range of about 100m in free air. Research and development (R &D) was used for the study, the necessary tools and materials were acquired. In our design procedure we used a ceramic capacitor in place of variable capacitor to facilitate tuning to desired frequency. Based on the procedure adopted and the tests carried out, the specific findings include, appreciable range with stable frequency of transmission obtained on power source devised from 9V lead acid battery. Various instructional applications and mass production strategies were outlined. The successful completion of this study has indicated that practical frequency modulated FM transmitter requiring low power can be designed and constructed. Though appreciable range of FM transmitter on low power supply has been achieved in this works, further studies in areas of signal coupling technique need to be carried to improve the range of transmission.