Resources Contact Us Home
Versatile audio power amplifier

Image Number 7 for United States Patent #7986187.

An audio power amplifier includes a first and a second amplification unit, each including a switching voltage amplifier, an output filter, a current compensator, an inner current feedback loop feeding a measurement of current measured at the output inductor back to a summing input of the current compensator, a voltage compensator coupled to the summing input of the current compensator, and an outer voltage feedback loop. A controlled signal path provides the output of the voltage compensator of the first amplification unit to the current compensator of the second amplification unit. The first and second amplification units are operable with separate loads, in parallel driving a common load, or across a bridge-tied-load. A second pair of amplification units may be added and operated together with the first pair to drive a single speaker with a parallel pair of amplifiers on each side of a bridge-tied-load.

  Recently Added Patents
Method and apparatus for variable accuracy inter-picture timing specification for digital video encoding
Substituted phenylsulfur trifluoride and other like fluorinating agents
Interconnect, bus system with interconnect and bus system operating method
Imaging lens with three lens elements, and electronic apparatus having the same
Method for exchanging data concerning an electronic transaction
Disk drive increasing capacity by adjusting a servo gate during write operations
Audio conversation apparatus
  Randomly Featured Patents
Metal detector, in particular mine detector
Overexpression of aminoacyl-tRNA synthetases for efficient production of engineered proteins containing amino acid analogues
Electrical wiring board and method for identifying same
Fingerlike medical instruments for use in laparoscopic procedures
Device for interconnecting lighting fixtures
Bottom dump trailer
Adhesion inhibiting composition
Stabilized nitroglycerin tablets
Heat activatable adhesive with improved temperature resistance
Information signal processing by modification in the spectral/modulation spectral range representation