Patents by Inventor Albert Stoker

Albert Stoker 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).

  • Audio-amplifier arrangement
    Patent number: 4544895
    Abstract: An asymmetrically driven audio amplifier arrangement comprises two amplifiers (1, 10) whose outputs (3, 12) are each connected to a common capacitor (18) via an associated loudspeaker (7, 16). The amplifier circuits (1, 10) are driven in phase opposition, so that the signal current through said common blocking capacitor becomes substantially zero. In addition, it is possible to replace the two loudspeakers by one loudspeaker of a higher power between the outputs (3, 12) of the two amplifiers (1, 10).
    Type: Grant
    Filed: August 22, 1983
    Date of Patent: October 1, 1985
    Assignee: U.S. Philips Corporation
    Inventor: Albert Stoker
  • Output amplifier with non-linear negative feedback
    Patent number: 4338573
    Abstract: Short-circuit protection of the load of an output amplifier by means of a non-linear coupling between the output and a d.c. bias point of the amplifier.
    Type: Grant
    Filed: March 19, 1980
    Date of Patent: July 6, 1982
    Assignee: U.S. Philips Corporation
    Inventors: Martinus J. van den Bungelaar, Albert Stoker