HIGH-EFFICIENCY POWER AMPLIFIER SYSTEM FOR WIRELESS POWER TRANSMITTERS

HIGH-EFFICIENCY POWER AMPLIFIER SYSTEM FOR WIRELESS POWER TRANSMITTERS

One example device for providing wireless power includes a power supply; a power amplifier coupled to the power supply, the power amplifier comprising a first switch and a second switch coupled to the power supply and to a common switch output, and a pulse-width modulator ("PWM") coupled t...

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1. Verfasser: GOVINDARAJ, Arvind
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Sprache:eng ; fre ; ger
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AMPLIFIERS
BASIC ELECTRONIC CIRCUITRY
CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
SYSTEMS FOR STORING ELECTRIC ENERGY
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creator GOVINDARAJ, Arvind
description One example device for providing wireless power includes a power supply; a power amplifier coupled to the power supply, the power amplifier comprising a first switch and a second switch coupled to the power supply and to a common switch output, and a pulse-width modulator ("PWM") coupled to the power amplifier, the PWM configured to substantially simultaneously toggle each of the first and second switches between open and closed states, and to maintain the first and second switches in opposite open and closed states; a controller coupled to the power supply and the PWM, the controller configured to: receive a sensor signal indicating an impedance of a load; determine a duty cycle of the PWM based on the sensor signal; and adjust an output voltage of the power supply based on the duty cycle of the PWM.
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subjects AMPLIFIERS
BASIC ELECTRONIC CIRCUITRY
CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
SYSTEMS FOR STORING ELECTRIC ENERGY
title HIGH-EFFICIENCY POWER AMPLIFIER SYSTEM FOR WIRELESS POWER TRANSMITTERS
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