Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Efficient power amplifier










Image Number 18 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
Reaction medium for detecting and/or identifying bacteria of the Legionella genus
Visual model importation
Financial transaction cards
Integrated disk driving module including a stepping motor integrally formed with a base unit
Calibration device and related method for phase difference between data and clock
System and method for associating financial transaction data with a user's project data using a portable electronic device
Coated article and method for making the same
  Randomly Featured Patents
Method of exposing and developing a homopolymer resist
Fixture and method for attaching components
Image sensor provided on a chip and having amplifying means
Distributed completion control in a microprocessor
Lid rack
Method of playing a board game
Herbicidally active dihalogenated imidazolecarboxylic acid amides, compositions and use
Printing ink for safe marking on a data carrier
Method and apparatus for calibrating the ionosphere and application to surveillance of geophysical events
Skateboard