Patents by Inventor Ralph Annacker

Ralph Annacker 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).

  • Circuit arrangement having clearing transistors for discharging a Darlington stage
    Patent number: 4695807
    Abstract: In a circuit arrangement with a Darlington stage, there are provided for clearing the charges of the Darlington transistors, transistors which are connected in such a way that the base current of the Darlington transistor preceding the last Darlington transistor travels in each case via the switched-through collector emitter section of a clearing transistor to the base of a following clearing transistor and actuates it.
    Type: Grant
    Filed: March 12, 1986
    Date of Patent: September 22, 1987
    Assignee: Telefunken electronic GmbH
    Inventors: Ralph Annacker, Joachim Dietl