Patents by Inventor Felix L. Ceca

Felix L. Ceca has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Inverter variable dead time for X-ray generator
    Patent number: 4597026
    Abstract: In an X-ray generator system having a pulse-width-modulated transistor inverter with associated flywheel diodes, method and apparatus is provided to sense when a diode associated with a non-pulse-width-modulated transistor is conducting and for inhibiting the turning on of that transistor during such period, to thereby avoid the transition from reverse conduction to direct conduction in an uncontrolled manner.
    Type: Grant
    Filed: December 22, 1983
    Date of Patent: June 24, 1986
    Assignee: General Electric Company
    Inventors: Carlos M. Santurtun, Felix L. Ceca, Jose M. Quevedo Bengoechea
  • Second breakdown protection circuit for X-ray generator inverter
    Patent number: 4589051
    Abstract: In an X-ray generator operating with a pulse-width-modulated transistor inverter, circuitry is provided to sense the collector-emitter voltage of each of the transistors and to responsively turn off the transistor when that voltage level reaches a predetermined threshold level which is indicative of a problem. Provision is included to inhibit the operation of the protective circuit during the time period in which the transistor is turning on so as to thereby allow for higher voltages during that critical period.
    Type: Grant
    Filed: December 22, 1983
    Date of Patent: May 13, 1986
    Assignee: General Electric Company
    Inventors: Carlos M. Santurtun, Felix L. Ceca, Jose M. Q. Benegoechea