Patents by Inventor Mark R. Wells

Mark R. Wells 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).

  • Current fed push pull power converter
    Patent number: 4980813
    Abstract: A power converter is provided with a split primary current fed push pull topology. An inductor connects the primary windings. Controllable switches provide alternate circuits from the dc source inputs through each of the primary windings and the inductor. Clamping diodes connect the ends of the inductor to the dc source inputs opposite to those provided by the controllable switches. The clamping makes cross conduction unnecessary. Separate duty cycle control is provided in each primary circuit.
    Type: Grant
    Filed: December 21, 1989
    Date of Patent: December 25, 1990
    Assignee: Northern Telecom Limited
    Inventor: Mark R. Wells