| Abstract [eng] |
One of the main goals of today's electronic engineering is to reduce energy consumption, reduce the physical size of devices and improve the quality of the functions performed. These trends are also present in the production of power amplifiers for professional acoustic systems, but in mass-production of these devices the main focus is placed either on economic parameters, such as energy consumption, weight, dimensions, price, or on the quality of a certain function, because the satisfaction of both parameters is both: too expensive and too complicated. This work introduces a set of improvements such as power factor correction, double power supply technology of modulated voltage power supply, that may help to combine both parameters (economic efficiency and quality) in real production. This Master's thesis is emphasizing the improvement of design and technology of power amplifiers, since the suggested ways of development allows to achieve high efficiency, good physical parameters, relatively smooth mains current draw and high power, at the same time maintaining high signal quality parameters. The Master’s thesis includes both: the results of numerous researches, which have been performed in order to identify the data, that was used during the design of innovative power amplifiers and the reasoning of chosen design decisions. |
