Patents by Inventor Bernd Bodig, deceased

Bernd Bodig, deceased 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 output stage having a darlington-pair circuit for switching an inductive load, especially the ignition coil of an internal-combustion engine
    Patent number: 5424671
    Abstract: A power output stage has a Darlington-pair circuit (11, 12) for switching an inductive load, especially the ignition coil of an internalcombustion engine. In order to predetermine the operating mode of the power output stage, a switch (24) is provided which bridges the base-emitter junction of the Darlington-pair circuit (11, 12), is closed in the event of a quick disconnection of the output stage, and is opened in the event of a voltage-limited disconnection of the output stage. A voltage divider, which consists of at least two resistors (16, 18) and bridges the switching junction of the Darlington-pair circuit (11, 12), is connected by means of its pick-off to the junction point between the switch (24) and the base of the Darlington-pair circuit (11, 12), the switch (24) being connected in parallel with a part (18) of the voltage divider.
    Type: Grant
    Filed: May 25, 1993
    Date of Patent: June 13, 1995
    Assignee: Robert Bosch GmbH
    Inventors: Gerd Hohne, Hartmut Michel, Lothar Gademann, Bernd Bodig, deceased