Power supplies
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United States of America Patent
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Apr 10, 2018
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N/A
app pub date -
Nov 3, 2016
filing date -
Jun 11, 2007
priority date (Note) -
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Abstract
Techniques for providing multiple power supplies in electronic devices are disclosed. According to one aspect of the present invention, an appropriate power supply is provided only to accommodate a volume setting. In other words, there are at least two power supplies, one with a low voltage and the other with a high voltage. The high voltage power supply is only applied when there is a need to accommodate a volume setting. Thus the power consumption of the amplifiers is well controlled. As a result, the designs of the device and heat dissipation therein can be simplified and lowered in cost.
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