Resources Contact Us Home
Efficient power amplifier

Image Number 13 for United States Patent #7834702.

A dynamic power supply for N amplifiers includes first and second power boost circuits which temporarily boost the positive or negative power supply rail, respectively. A control circuit monitors amplifier output signal levels and provides power boost control signals to the power boost circuits, which temporarily raise the positive supply voltage above the nominal voltage level in tandem with the highest output signal from the N amplifiers and lower the negative supply voltage below the nominal voltage level in tandem with the lowest output signal level from the N amplifiers. The power boost circuits each may be coupled to a reservoir capacitor from which current is drawn to provide the power boost. When inactive, the reservoir capacitors charge up from the respective power supply rails. The dynamic power supply is well suited for audio amplification systems.

  Recently Added Patents
Classifying documents using multiple classifiers
Semiconductor memory system having ECC circuit and controlling method thereof
Use of cocoa extract
Image processing apparatus, control method for the same, and storage medium
Economic filtering system for delivery of permission based, targeted, incentivized advertising
Device and method to automatically configure port forwarding
  Randomly Featured Patents
Human cytomegalovirus neutralising antibodies and use thereof
Branched chain olefinic, alcohols, thiols, esters and ethers, organoleptic uses thereof, processes for preparing same and intermediates therefor
Drier bearing
Interface between video cassette player and television receiver
Method of manufacturing gel electrode for early detection of metal fatigue
Nitrile compounds useful as reversible inhibitors of #9 cathepsin 5
Shielded couplers
Tool and a cutting insert for chip removing machining
Cabinet for TV or the like