Resources Contact Us Home
Voltage detection type overcurrent protection device for class-D amplifier

Image Number 7 for United States Patent #7701287.

The present invention discloses a voltage detection type overcurrent protection device, which applies to the output stage of a CMOS Class-D audio amplifier. Generally, a Class-D audio amplifier is used to drive a high-load loudspeaker; therefore, it needs a high-current driver. When there is a short circuit in the load, the high current will burn out the driver stage. The present invention detects the output voltage to indirectly monitor whether the output current is too large. Once an overcurrent is detected, the output-stage transistor is turned off to stop high current lest the circuit be burned out.

  Recently Added Patents
Codeword-enhanced peer-to-peer authentication
Campanula plant named `PKMM03`
Multiple carrier compression scheme
Stable aqueous composite compositions
Apparatus for counting particles in a gas
Organic light emitting display apparatus
Cationic polymers for antimicrobial applications and delivery of bioactive materials
  Randomly Featured Patents
Automatic flush actuation apparatus
Leapfrog filter
Acoustic horn for use in cellular flip phones
Method of testing hard disk drive and computer readable medium therefor
System and methods for tomography image reconstruction
Liquid enteral nutritional composition suitable for tube feeding, minimizing lower and upper tract digestive conditions
Ink applicator for a tampon printing machine
Interactive chocolate board game
Dormer door silo
Adaptive process control system