The diploma thesis addresses the process of establishing and optimizing the operation of an audio amplifier, as well as the selection and configuration of its key parameters. The amplifier is based on the EB-TA0104 development board by Tripath. The work provides a detailed description of the integration of the development board, power supply modules, and associated wiring into a dedicated enclosure, forming a complete and functional system.
The performance and quality of the amplifier are supported by established industry measurements, which show that the amplifier achieves good technical characteristics.
The total harmonic distortion plus noise (THD+N) at an output power of 100 W amounts to 0.0747 %, while the intermodulation distortion according to the SMPTE standard reaches 0.2512 %, and according to the ITU method 0.01387 %.
The system gain is 15.3, and the signal-to-noise ratio (SNR) reaches 82.70 dB, ensuring proper reproduction without noticeable noise influence.
The efficiency of the amplifier at a 100 W load is 86 %, confirming the energy efficiency of the design.
The frequency response remains stable across the entire range from 100 Hz to 20 kHz,
with deviations not exceeding ±0.5 dBV.
In conclusion, the thesis also presents possibilities for further improvements, which could further enhance the quality and efficiency of the amplifier.
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