Patents by Inventor Burghard Krahl

Burghard Krahl 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 supply arrangement comprising a direct voltage monitoring circuit
    Patent number: 5541500
    Abstract: Power supply arrangement comprising a direct voltage monitoring circuit. A power supply arrangement comprising a direct voltage monitoring circuit for at least two different-polarity direct voltages connected to a common reference potential, and including a signal transmission element. The monitoring circuit arrangement has an enhanced accuracy of response with limited circuitry and cost. A series connection of a zener diode and a resistor is connected in shunt with each direct voltage. The junction point of each zener diode and resistor is connected to the base of a transistor. A first electrode of each transistor is connected to the signal transmission element and a second electrode.
    Type: Grant
    Filed: July 16, 1990
    Date of Patent: July 30, 1996
    Assignee: U.S. Philips Corporation
    Inventor: Burghard Krahl