Publication: Amplificador de audio en clase A para auriculares
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2012-10
Defense date
2012-10-30
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Abstract
El presente proyecto muestra el desarrollo, la simulación y la implantación de un amplificador de audio de altas prestaciones, empleando para ello transistores discretos y amplificadores operacionales sobre una PCB diseñada previamente con un programa software. La aplicación de este amplificador será como amplificador de potencia para auriculares de alta impedancia. El circuito empleará una técnica de realimentación directa sobre los auriculares conectados a 4 hilos. El amplificador incorporará un circuito de protección para el arranque y una fuente de alimentación independiente. Para la comprobar la validez del prototipo, se compararán los resultados obtenidos en las simulaciones ofrecidas por el programa software, con las medidas obtenidas en el banco de pruebas del montaje final. ____________________________________________________________________________________________________________________
The current Project shows the development, simulation and implementation about a High Spec audio amplifier, using for that aim discrete amplifiers and operational amplifiers on a PCB previously designed with the help of a software program. The usage of this amplifier will be as a headphones audio amplifier with high impedance. The circuit will act on the four wires of the headphones with a direct feedback. The amplifier will include a protection circuit and an independent power supply source. To test the validity of the prototype, it will be compared the obtained in the simulation given by the software to the measurements obtained in the test bench of the final assembly.
The current Project shows the development, simulation and implementation about a High Spec audio amplifier, using for that aim discrete amplifiers and operational amplifiers on a PCB previously designed with the help of a software program. The usage of this amplifier will be as a headphones audio amplifier with high impedance. The circuit will act on the four wires of the headphones with a direct feedback. The amplifier will include a protection circuit and an independent power supply source. To test the validity of the prototype, it will be compared the obtained in the simulation given by the software to the measurements obtained in the test bench of the final assembly.
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Keywords
Amplificadores, Transistores discretos, Electroacústica, Ancho de banda, Transformadas de Fourier