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
Asynchronous line interface rate adaptation to the physical layer with synchronous lines at the connection layer
Method for radiation sterilization of medical devices
Compound semiconductor device and manufacturing method therefor
Amnion-derived cells, methods of making and uses thereof
Dual-leadframe multi-chip package and method of manufacture
360-degree angle decoder
Semiconductor memory device, test circuit, and test operation method thereof
  Randomly Featured Patents
Wound therapy device
Optical semiconductor device and method of fabricating the same
Hair clipper
Amusement device
Battery charger
Jeweled undergarment
Trans-tympanic connector for magnetic induction hearing aid
Contact type image sensor with electric shielding
Impact-resistant polyamide molding compounds
Hot film sensor for air flow meter