Patents by Inventor Jeffrey L. Vollin

Jeffrey L. Vollin 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).

  • Fixed frequency DC to DC converter with a variable inductance controller
    Patent number: 5373432
    Abstract: A DC to DC converter (50, 60, 70) that includes a switching circuit (10) responsive to a DC input, a magnetic amplifier controller (20) responsive to the switching circuit for providing an AC output, and an AC current to DC voltage rectifying circuit (30) responsive to the output of the magnetic amplifier controller for providing a DC output voltage. The magnetic amplifier controller includes a variable inductance (L1) that cooperates with the switching circuit to form a resonant DC to AC inverter (110) that provides to the magnetic amplifier controller a current whose amplitude is controlled by the variable inductance. The magnetic amplifier controller provides an approximately sinusoidal output current which is a function of the current input thereto, and the DC voltage output of the AC current to DC voltage rectifier is a proportional to the input current provided by the magnetic amplifier controller.
    Type: Grant
    Filed: December 10, 1992
    Date of Patent: December 13, 1994
    Assignee: Hughes Aircraft Company
    Inventors: Jeffrey L. Vollin, Dong Tan