Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Forward converter transformer saturation prevention










Image Number 17 for United States Patent #8130517.

A power converter in one aspect limits the magnetic flux in a transformer. A control circuit included in the power converter includes a pulse width modulator, logic circuits and saturation prevention circuits. The saturation prevention circuits assert a first signal when a first integral value of the input voltage reaches a first threshold value and assert a second signal after a delay time that begins when a difference between the first integral value and a second integral value of a reset voltage of the transformer falls to a second threshold value. The logic circuits turn off the switch when the first signal is asserted, and allow the switch to turn on and off in accordance with the pulse width modulator when the second signal is asserted.








 
 
  Recently Added Patents
Methods and devices for enforcing network access control utilizing secure packet tagging
Device for preparing a body fluid for a bacteriological analysis
Fabrication method of semiconductor device and fabrication method of dynamic threshold transistor
Monitoring device for monitoring a display device
Battery loading and unloading mechanism
Pet cremation urn
Electronic communication device
  Randomly Featured Patents
Tile for a pitched roof
Automatic data categorization with optimally spaced semantic seed terms
Resin composition and coating method using the same
Ultrasonic pump with non-planar transducer for generating focused longitudinal waves and pumping methods
JMOS transistor utilizing polysilicon sinks
Writing implement with elastometric grip pads
Skimmer for floating roof storage tanks
Sheet-like reinforced material
Controls for drawing images on computer displays
Apparatus for stacking unfired brick