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Development of a Power Management System in a Public Address System
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Electronic devices, circuits and systems are often over-weight and more difficult to house because they waste a lot of scarce electricity in their idling mode. Considering the global concern about energy conservation, it is worth redesigning these electronic devices to minimize their idling power in order to better channel the available energy into more productive use. Public address systems waste a significant amount of energy during silent intervals in the input speech signal. In this work, an energy-efficient public address system with minimal idling power consumption was developed. A microcontroller circuit was used to control a flexible timing, switched public address system based on detected silent speech intervals. There was a thousandth reduction in the idling power consumption of the developed system, which culminated in a better management of speaking activities. Speaking facility managers as well as manufacturers of energy-saving technologies would find this interesting.
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