Patents by Inventor Ferdinand Gesell

Ferdinand Gesell 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).

  • Circuit layout to eliminate alternating voltage interference signals
    Patent number: 4839608
    Abstract: AC interference signals are eliminating during amplification of certain DC signals of interest in a low-pass amplifier by providing an auxiliary AC amplifier in like configuration as the low-pass amplifier, amplifying the interference signals in the auxiliary amplifier, and applying the resulting compensation signal to a summing node of the low-pass amplifier in counterphase to the original interference signals. Such an approach avoids much of the complexity and cost of prior art compensating networks.
    Type: Grant
    Filed: October 13, 1988
    Date of Patent: June 13, 1989
    Assignee: Eckardt AG
    Inventor: Ferdinand Gesell