Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Processing circuitry for use with a position sensor
Listing recommendation using generation of a user-specific query in a network-based commerce system
Method and system for establishing enhanced key when terminal moves to enhanced universal terminal radio access network (UTRAN)
Dose escalation enzyme replacement therapy for treating acid sphingomyelinase deficiency
PLL circuit
Drinking glass with ball embedded in base
Bad column management with bit information in non-volatile memory systems
  Randomly Featured Patents
Branch stent graft deployment and method
Ticket dispenser
Watch
Method and apparatus for sealing the corner joint of the spacer of an insulating glass pane
Collapsible powered operated vehicle
Electronic musical instrument
Worm-gear assembly having a pin raceway
Semiconductor device
Apparatus and method for manufacturing resilient bands
Systems of reliably interconnectable reversible USB connectors