Patents Represented by Attorney Gregory C. Hendricks

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  • Two terminal microphone active load gain regulation circuit
    Patent number: 4518829
    Abstract: An electret microphone gain regulation circuit employing an active load for use in high quality telephone instruments or handsets where two terminal electret microphones of the current source type are employed. The circuitry provides a heavier load on short loops and a lighter load on long loops to regulate the signal level at its output.
    Type: Grant
    Filed: April 2, 1984
    Date of Patent: May 21, 1985
    Assignee: GTE Communications Systems Corporation
    Inventor: Eduard F. B. Boeckmann