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
Switching power supply apparatus with overcurrent limiting and prolonged holding time
Method for manufacturing a substrate for a display device
Auto-provisioning of network services over an Ethernet access link
Luggage
Method of and apparatus for image denoising
Systems and methods for parameter adaptation
Substituted bicyclic HCV inhibitors
  Randomly Featured Patents
External module for an electronic communication device
Method and apparatus for efficient data transmission control in a wireless voice-over-data communication system
Organic photovoltaic device
Semiconductor storage device with first and second pads arranged in proximity with first to fourth output transistors for reducing an excess region
Intermittent washer
Apparatus for processing developed photographic films prior to copying
Method for using image support regeneratively and tool for forming image on image support
Enhanced concert audio system
Embedded piezoelectric microcantilever sensors
Systems and methods for analyzing growth of computer detected patterns on digital medical images