Patents by Inventor Fred A. Perner

Fred A. Perner 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: 4331886
    Abstract: This current switch driving circuit arrangement particularly for, but not necessarily limited to, inductive device current switching, comprises a pair of output transistors constituting a driving transistor for turning ON a subsequent switching transistor and a current sinking transistor for turning OFF that switching transistor. A receiver circuit is arranged for applying one bilevel logical signal for alternatively driving the two transistors by way of intermediate circuits each having current multiplying circuitry for deriving the necessary driving currents. The intermediate circuitry is effective for toggling the current from one of the transistors to the other with provisions for insuring speedy switching action.
    Type: Grant
    Filed: June 23, 1980
    Date of Patent: May 25, 1982
    Assignee: International Business Machines Corporation
    Inventors: Fred A. Perner, Lionel D. Provazek