Patents by Inventor Wolfgang Röhrner

Wolfgang Röhrner 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).

  • Active Filter for Bipolar Voltage Sources
    Publication number: 20200044625
    Abstract: The invention relates to a device for rejecting interference signals in bipolar voltage sources, in particular in high-voltage sources in a powertrain of an electric vehicle, wherein an amplifier circuit is provided, with an input stage the input of which is symmetrically connected by means of an electrically isolated tap to a positive power line and a negative power line of a voltage source in order to tap an interference signal, and with an output stage, actuated by the input stage, the output of which is symmetrically connected in each case via an output capacitor to the positive power line and the negative power line, in order to feed in a correction signal.
    Type: Application
    Filed: October 26, 2017
    Publication date: February 6, 2020
    Applicant: AVL Software and Functions GmbH
    Inventors: Bastian Arndt, Wolfgang Röhrner, Hartwig Reindl