Patents by Inventor Douglas Birlingmair

Douglas Birlingmair 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).

  • Voltage sensing device and associated method
    Publication number: 20070096718
    Abstract: A transformer circuit is disclosed that minimizes the temperature dependence of an output voltage. A first embodiment of the present invention includes a primary winding coupled to received a voltage to be sensed and a center-tapped secondary winding coupled at a center point to first voltage output terminal. The center-tapped secondary winding includes a first secondary winding and a second secondary winding, the secondary windings being coupled through a bridge circuit to a second voltage output terminal.
    Type: Application
    Filed: December 21, 2006
    Publication date: May 3, 2007
    Applicant: Primary Integration, LLC
    Inventors: Douglas Birlingmair, Larry Adams
  • Voltage sensing device and associated method
    Publication number: 20050077910
    Abstract: A transformer circuit is disclosed that minimizes the temperature dependence of an output voltage. A first embodiment of the present invention includes a primary winding coupled to receive a voltage to be sensed and a center-tapped secondary winding coupled at a center point to a first voltage output terminal. The center-tapped secondary winding includes a first secondary winding and a second secondary winding, the secondary windings being coupled through a bridge circuit to a second voltage output terminal. Details of this and other embodiments are disclosed.
    Type: Application
    Filed: October 10, 2003
    Publication date: April 14, 2005
    Inventors: Douglas Birlingmair, Larry Adams