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
Liposomes useful for drug delivery
Display screen or portion thereof with icon
Workflow execution model
Electromagnetic step-by-step wobble-type micromotor
Platform integrated phased array transmit/receive module
Non-bussed vehicle amplifier diagnostics
PMD-insensitive method of chromatic dispersion estimation for a coherent receiver
  Randomly Featured Patents
Ionically conductive material having a block copolymer as the solvent
Treatment of pets
Control system for a clutch for a vehicle
Introduction of structural affinity handles as a tool in selective nucleic acid separations
Cover for spa or the like
Multilayer interconnection substrate and manufacturing method therefor
Preparation and use of non-chrome catalysts for Cu/Cr catalyst applications
Tree stand extension
Protective coating for bodily sensor
Copolyestercarbonates derived from dimer acids and method for their preparation