Resources Contact Us Home
Efficient power amplifier

Image Number 13 for United States Patent #7834702.

A dynamic power supply for N amplifiers includes first and second power boost circuits which temporarily boost the positive or negative power supply rail, respectively. A control circuit monitors amplifier output signal levels and provides power boost control signals to the power boost circuits, which temporarily raise the positive supply voltage above the nominal voltage level in tandem with the highest output signal from the N amplifiers and lower the negative supply voltage below the nominal voltage level in tandem with the lowest output signal level from the N amplifiers. The power boost circuits each may be coupled to a reservoir capacitor from which current is drawn to provide the power boost. When inactive, the reservoir capacitors charge up from the respective power supply rails. The dynamic power supply is well suited for audio amplification systems.

  Recently Added Patents
Telephony usage derived presence information
Modular electric load system II
Device and partial mold for the production of rotor blades for wind power plants and methods for the production
Storage system comprising plurality of storage system modules
Mixed carrier communication channel management
Silane-crosslinking compositions
Connecting system for electrically connecting electronic devices and method for connecting an electrically conductive first connector and electrically conductive second connector
  Randomly Featured Patents
Raised orientation pattern for nesting blocks for megachile rotundata
Method and device for controlling the film thickness of evaporated film
General base state assignment for optimal massive parallelism
Air-cooling tower
Novel allylic amines
Plywood lay-up system
Fuel injection pump for internal combustion engines
1-[pyri(mi)dyl-(2)]-5-hydroxy-pyrazole microbicides
Thermoplastic bow limb
Video signal recording and reproducing apparatus using signal modification to remove jitter