US Patent 7800444 Class D amplifier
Patent 7800444 was granted and assigned to Panasonic on September, 2010 by the United States Patent and Trademark Office.
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Patent abstract
A single-end-output class D amplifier handles a load, such as stereo headphones, without using an expensive part such as a crystal resonator or transformer. The class D amplifier is equipped with PWM (Pulse Width Modulation) circuits that perform pulse width modulation of an input signal and output two opposite-phase PWM outputs, PWM output buffers that amplify differential outputs of PWM circuits using a power supply voltage, and inductors that combine PWM outputs amplified by the PWM output buffers.
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Patent Inventor Names
Akihito Tsukamoto0
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Official Website
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US Patent 07800444 Class D amplifier US Patent 7800444 Class D amplifier
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Patent Number
078004440
Patent Number
78004440
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Is a
Current Assignee
Patent Jurisdiction
Patent Number
078004440
Date of Patent
September 21, 2010
0Patent Application Number
123326890
Date Filed
December 11, 2008
0Official Website
Patent Primary Examiner
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US Patent 07800444 Class D amplifier
Infobox
Is a
Current assignee
Patent jurisdiction
Patent number
07800444
Date of patent
September 21, 2010
Patent application number
12332689
Date Filed
December 11, 2008
Patent primary examiner
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