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
Catalyst composition with nanometer crystallites for slurry hydrocracking
Image sorting device, method, program, and integrated circuit and storage medium storing said program
Peer to peer (P2P) missing fields and field valuation feedback
Methods and apparatus to perform time zone determination by a mobile station
Hydrofluorocarbon refrigerant compositions for heat pump water heaters
Method and apparatus for encoding and decoding video based on first sub-pixel unit and second sub-pixel unit
Tool bag with removable tool wall
  Randomly Featured Patents
Whirling banner or kerchief
Optical fiber connector
Process for forming roller guide frames for a fishing line
Door mounted courtesy light fixture and assembly
Method and apparatus for modulation differentiation
Integrated circuit package resistance measurement
Fast three dimensional recovery method and apparatus
Means for operating blast valve in two-pressure circuit breaker
Method and system for real time uniformity feedback
Balanced input/output task management for use in multiprocessor transaction processing system