Amplification of signals output from bridge-tied load audio amplifiers
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United States of America Patent
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Sep 6, 2016
Grant Date -
N/A
app pub date -
Jul 21, 2015
filing date -
Jul 21, 2015
priority date (Note) -
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Abstract
Disclosed boost amplifiers are used with a BTL amplifier that outputs balanced audio signals and that has an output current capacity and a dynamic power capacity. Disclosed amplifiers include an audio amplifier with a dynamic power capacity and that amplifies the balanced audio signals and applies them to a load, at least one diode that receives audio signals and produces single-ended input power signals, and at least one regulator that converts the single-ended input power signal into a regulated power signal of a higher magnitude. The boost regulator presenting a variable input impedance to the BTL amplifier such that the output current capacity of the BTL amplifier is not exceeded. Disclosed amplifiers also include a DC power reservoir that stores power from the regulated power signal and supplies sufficient power that the dynamic output power capacity of the audio amplifier exceeds the dynamic power capacity of the BTL amplifier.
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