Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Pulse width modulation circuit










Image Number 13 for United States Patent #5451900.

To suppress electromagnetic radiation without exerting any harmful influence upon both S/N ratio and dynamic range, a pulse width modulation circuit includes an integrating circuit for integrating an input signal applied to an input terminal with respect to time, a comparing circuit connected to the integrating circuit and having hysteresis characteristics, a feedback circuit for feeding back the output of the comparing circuit to an input of the integrating circuit, and an amplitude modulation circuit, provided in a loop including the integrating circuit and the comparing circuit, for implementing amplitude modulation to modulate a frequency of the output of the comparing circuit. Further, the output of the comparing circuit can be fed-back to the integrating circuit via an amplitude modulation circuit. Alternatively, the amplitude of the output of the integrating circuit is first modulated by the amplitude modulation circuit, before being applied to the comparing circuit. A dither signal is applied to the amplitude modulation circuit or, alternatively, a signal for maintaining frequency of the pulse modulated signal may be applied.








 
 
  Recently Added Patents
Semiconductor device and manufacturing method thereof
Server chassis
Systems and methods for identifying similar documents
Semiconductor device and method of manufacturing the same
Electromagnetic probe for measuring properties of a subsurface formation
Digital fine delay processing
Sample analyzing device
  Randomly Featured Patents
Safety indwelling needle
Casino game with multiple playing modes and wagering options
Exploding bridge wire detonator with shock reflector for oil well usage
Display control device, display control method, control program, and storage medium
High speed toy vehicle and launcher therefor
Optimized E.sup.2 pal cell for minimum read disturb
Air seeder/fertilizer apparatus having metering means and distribution manifold with selectively openable ports
Acoustic sensor for fluid characterization
Sealable container
Solid state differential pressure sensor with overpressure stop and free edge construction