Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Delta-sigma modulator and its application to switching amplification circuit










Image Number 15 for United States Patent #7248193.

A loop delay control circuit is provided between a comparator and a power switch stage. When the amplitude of an input signal is especially high, the loop delay control circuit secures an oscillation threshold value by setting a delay amount at a low value. On the other hand, when the amplitude of the input signal is not so high, the loop delay control circuit reduces an average switching rate by increasing the delay amount, but does not reduce the oscillation threshold value. This makes it possible to provide a delta-sigma modulator allowing realization of both (i) a high oscillation threshold value, i.e., high output power, and (ii) high power efficiency.








 
 
  Recently Added Patents
Cooler
Magnetic reading and writing device
Method and apparatus for image sensor packaging
Lighting control device and lighting control method
Vanilloid receptor ligands and use thereof for the production of pharmaceutical preparations
Determination and presentation of package pricing offers in response to customer interest in a product
Biomarkers of gastric cancer and use thereof
  Randomly Featured Patents
Optical imaging of breast tissues to enable the detection therein of calcification regions suggestive of cancer
Method and apparatus for editing groups of graphic images
Web-fed rotary printing press
Rotatable arm assembly for forming a paper pad
Rugged semiconductor device architecture
Non-planar surface structures and process for microelectromechanical systems
Remodeling cable protecting plate
Granular material containing recycled paper components
Infant health monitoring system
Remote charging system for a vehicle