Patents by Inventor Karsten-Erik Thiele

Karsten-Erik Thiele 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).

  • Patent number: 5166543
    Abstract: A current regulating circuit for an inductive load (12) is proposed, in particular for an electrohydraulic pressure regulator for an automatic transmission of a motor vehicle. A push-pull end stage (16) controls the flow of current through the load (12). Connected in series with the load (12) is a measuring resistor (11), the voltage drop of which, as an actual current value, is applied along with a command current value to a comparison stage (23, 34), by the clocked output signal of which the end stage (16) can be controlled. The measuring resistor (11) is disposed between the load (12) and a first switch transistor (10) of the end stage (16). The potential at one of the pickups (19, 20) of the measuring resistor (11) is provided as a variable reference potential for an auxiliary voltage source (31) supplying the comparison stage (23, 34), which source has switch means (40) for generating an auxiliary voltage (Uh) that is constant relative to the variable reference potential.
    Type: Grant
    Filed: September 12, 1991
    Date of Patent: November 24, 1992
    Assignee: Robert Bosch GmbH
    Inventors: Claus Schneider, Karsten-Erik Thiele