Patents by Inventor Gilbert McDonald

Gilbert McDonald 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).

  • Dual input AC/DC to programmable DC output converter
    Patent number: 6775163
    Abstract: A power converter capable of receiving either an AC input voltage or a DC input voltage and generating a programmable DC output voltage. The converter comprises a first circuit that converts an AC input voltage to a predetermined DC first output voltage, and a second circuit that converts a DC input voltage to a predetermined second DC output voltage. The converter also comprise a third circuit which is adapted to receive the first and second DC voltages from first and second circuits to generate a selectable output DC voltage. In selected embodiments, the first and second DC output voltages provided by the first and second circuits, respectively, are generally the same value and are coupled to a common node that feeds the input terminal of the third circuit. Moreover, the third circuit is adapted to provide a selectable output DC voltage which may be set higher or lower than its DC input voltage.
    Type: Grant
    Filed: September 12, 2003
    Date of Patent: August 10, 2004
    Assignee: Mobility Electronics Inc.
    Inventors: Gilbert McDonald, Charles Lord, Steve Smith, Garry DuBose
  • Dual input AC/DC to programmable DC output converter
    Publication number: 20040037102
    Abstract: A power converter capable of receiving either an AC input voltage or a DC input voltage and generating a programmable DC output voltage. The converter comprises a first circuit that converts an AC input voltage to a predetermined DC first output voltage, and a second circuit that converts a DC input voltage to a predetermined second DC output voltage. The converter also comprise a third circuit which is adapted to receive the first and second DC voltages from first and second circuits to generate a selectable output DC voltage. In selected embodiments, the first and second DC output voltages provided by the first and second circuits, respectively, are generally the same value and are coupled to a common node that feeds the input terminal of the third circuit. Moreover, the third circuit is adapted to provide a selectable output DC voltage which may be set higher or lower than its DC input voltage.
    Type: Application
    Filed: September 12, 2003
    Publication date: February 26, 2004
    Applicant: MOBILITY ELECTRONICS INC.
    Inventors: Gilbert McDonald, Charles Lord, Scott Smith, Garry DuBose
  • Dual input AC/DC to programmable DC output converter
    Patent number: 6643158
    Abstract: A power converter capable of receiving either an AC input voltage or a DC input voltage and generating a programmable DC output voltage. The converter comprises a first circuit that converts an AC input voltage to a predetermined DC first output voltage, and a second circuit that converts a DC input voltage to a predetermined second DC output voltage. The converter also comprise a third circuit which is adapted to receive the first and second DC voltages from first and second circuits to generate a selectable output DC voltage. In selected embodiments, the first and second DC output voltages provided by the first and second circuits, respectively, are generally the same value and are coupled to a common node that feeds the input terminal of the third circuit. Moreover, the third circuit is adapted to provide a selectable output DC voltage which may be set higher or lower than its DC input voltage.
    Type: Grant
    Filed: December 3, 2001
    Date of Patent: November 4, 2003
    Assignee: Mobility Electronics, Inc.
    Inventors: Gilbert McDonald, Charles Lord, Steve Smith, Gary DuBose