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
Interleaving charge pumps for programmable memories
System and method for providing an extended platform for an operating system
Heat stable variants of plant adenosine diphosphate glucose pyrophosphorylase small subunit
Systems and methods for providing a shared folder via television
Agent for expelling parasites in humans, animals or birds
Image forming apparatus having a primary transfer unit, a secondary transfer unit, and a direct transfer unit
  Randomly Featured Patents
New and used oil filter container with used filter removing means
Detonator device and method for making same
Bicyclic dioxanes, their preparation and their use as fragrant compounds
Fluorescent tube thermal management system utilizing thermal electric cooler units
Television stand
Process for preparing tunicamycin
Vibration-damping ring insert arrangement and component connection arrangement incorporating the same
Member having antireflection structure
Incremental factorization-based smoothing of sparse multi-dimensional risk tables
Method and apparatus for providing process guidance