Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Optimal resetting of the transformer's core in single ended forward converters










Image Number 6 for United States Patent #4441146.

The transformer's core in single ended forward converters is reset by a "magnetizing current mirror" consisting of a capacitor in series with an auxiliary switch which, during the OFF period of the primary switch, couples the capacitor to one of the transformer's windings to form a resonant circuit with the transformer's magnetizing inductance. The resonant circuit recycles the transformer's magnetizing energy by creating a mirror image of the magnetic flux between ON periods. This maximizes the flux swing available within a given core. The voltage stress on the primary switch is minimized as the voltage across the switch during the OFF period is approximately constant and automatically tailored to avoid dead time for arbitrary values of the switch duty cycle.








 
 
  Recently Added Patents
Printer
Loudspeaker grille
Power management implementation in an optical link
Nanoparticle entrapment of materials
Methods and apparatus for dynamic identification (ID) assignment in wireless networks
Semiconductor memory device
Polynucleotide capture materials, and methods of using same
  Randomly Featured Patents
Organic light emitting element
Mass storage device with automated credentials loading
Diagnosis device for electromagnetic relief valve in fuel delivery device
METHOD FOR REMOVING CONTAMINANT COMPOUNDS RESPECTIVELY HAVING BENZENE RING THEREIN FROM SURFACE OF SI LAYER AND METHOD FOR PRODUCING SEMICONDUCTOR DEVICE INCLUDING STEP FOR REMOVING CONTAMINAN
Ratchet wrench
Antistatic resin composition
Independent index mechanism for parking meters
Electric double layer capacitor
Automatic weighing apparatus
Importing data from a source document into a destination document