Patents by Inventor Roger M. Allen

Roger M. Allen 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).

  • Power switching circuit
    Patent number: 6414404
    Abstract: A power switching circuit has: first and second voltage supply lines (2 and 3); a control signal input terminal (I); a load terminal (LT); and a measurement terminal (MT). A power semiconductor switch (M) has a main current carrying section (MC1 and MC2) and a sense current carrying section (SC1 and SC2) for carrying a current which is proportional to and smaller than the current carried by the main current carrying section. The main current carrying section is formed of a plurality of subsidiary current carrying sections (MC1 and MC2). Each subsidiary current carrying section has a subsidiary main current carrying electrode (S1 and S2) coupled to the load terminal (LT) so that the subsidiary electrodes together form the main current carrying electrode. Each subsidiary main current carrying section has a respective different control electrode (G1 and G2).
    Type: Grant
    Filed: April 11, 2000
    Date of Patent: July 2, 2002
    Assignee: Koninklijke Philips Electronics N.V.
    Inventor: Roger M. Allen