The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 14, 2002
Filed:
Dec. 23, 1999
Applicant:
Inventors:
Ray King, Carolina Beach, NC (US);
John Parry, Hermosa Beach, CA (US);
Jonathan Adams, Rancho Palos Verdes, CA (US);
Assignee:
International Rectifier Corporation, El Segundo, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/38 ;
U.S. Cl.
CPC ...
H03F 3/38 ;
Abstract
A Class D amplifier system utilizing high voltage level shifting technology and an adaptive power supply which adjusts the magnitude of the output voltage based on audio input levels to reduce switching losses at low audio input levels. The amplifier system of the present invention also removes any DC offset at the output by providing an equal positive and negative power supply with respect to ground.