Patents by Inventor James R. Carbery

James R. Carbery 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).

  • Voltage limiter and single-ended to differential converter using same
    Patent number: 5283484
    Abstract: A voltage limiter (20) includes a resistor (21) receiving an input signal on a first terminal and providing an output signal on a second terminal, and a capacitor (22) connected between the second terminal of the resistor (21) and ground. Two transistors (23,26) biased by first and second bias voltages, respectively, are connected between the second terminal of the resistor and a second voltage terminal to clamp the output voltage between high and low voltage limits. A single-ended to differential converter (60) uses two such voltage limiters. A first voltage limiter (90) receives an input voltage, and has an output terminal connected to a positive input terminal of an amplifier (100). A second voltage limiter (92) has an input terminal connected to the second voltage terminal and an output terminal connected to a negative input terminal of the amplifier (100). A shared capacitor (83) is coupled between second terminals of resistors of the first (90) and second (92) voltage limiters.
    Type: Grant
    Filed: October 13, 1992
    Date of Patent: February 1, 1994
    Assignee: Motorola, Inc.
    Inventors: Geoffrey E. Brehmer, James R. Carbery