Resources Contact Us Home
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
User-initiated quality of service modification in a mobile device
Methods and systems for aggregating and graphically representing information associated with a telecommunications circuit
Sensor apparatus and information processing apparatus
System and method for hybrid risk modeling of turbomachinery
Vehicle headlight
System and method of improving audio signals for the hearing impaired
  Randomly Featured Patents
Package for a body cleanser and scrub product
Plants and seeds of hybrid corn variety CH889077
Magnetically driven axial-flow pump
Performing runtime analysis and control of folding identified threads by assuming context of another thread and executing in lieu of another thread folding tool
Techniques to decrease signal amplitude peak-to-average ratio in a wireless communications system
Microcomputer with configurable communication interfacing
Apparatus for controlling distance between vehicles
Method for promoting hematopoietic and mesenchymal cell proliferation and differentiation
Game determination of tag relevance for social bookmarking
Therapeutic suppression of specific immune responses by administration of antigen-competitive conjugates.