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
Process for preparing synthetic intermediates of peripherally-selective inhibitors of dopamine-.beta.-hydroxylase involving catalytic asymmetric hydrogenation
Methods and apparatus for power amplifier calibration
Lifting apparatus
Computer program, system, and method for mapping Social Security claiming strategies
Methods and compositions for inhibiting progression to chronic cardiac failure
5-lipoxygenase-activating protein (FLAP) inhibitors
Sperm factor sequences
  Randomly Featured Patents
Food compositions, compositions for oral cavity and medicinal compositions for preventing or treating periodontosis and method for preventing or treating periodontosis
Group authentication method
Backlight unit and liquid crystal display device having the same
Photo-curing polysiloxane composition and protective film formed from the same
Process for the preparation of aprepitant
Method and apparatus for performing buffer status reporting
Ventilator
Cathode-ray tube having a shrinkfit implosion protection band with tension limiting means
Automation and security application store suggestions based on usage data
Multideterminant peptides that elicit helper T-lymphocyte, cytotoxic T lymphocyte and neutralizing antibody responses against HIV-1