Very low power loss amplifier for analog signals utilizing constant-frequency zero-voltage-switching multi-resonant converter
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United States of America Patent
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Dec 26, 1995
Grant Date -
N/A
app pub date -
Nov 30, 1993
filing date -
Nov 30, 1993
priority date (Note) -
Expired
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Abstract
A high-efficiency analog power amplifier is disclosed. The amplifier utilizes pulse-width-modulation ('PWM') signals to operate electrical switching devices coupled in series across a d.c. power source. A resonant circuit coupled to the transistors periodically places zero and non-zero voltage levels across each transistor. The frequency and width of the PWM signals are relative to the components of the resonant circuit--enabling each transistor to switch off and on only when zero volts appears across the transistor.
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