Patents by Inventor Peter S. Henry

Peter S. Henry 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 detector with trigger based on output load currency
    Patent number: 5666043
    Abstract: An alarm based upon the voltage across a linear regulator's pass transistor and the regulator's load current alerts operational circuitry which obtains power through the regulator when the voltage across the pass transistor may be insufficient for proper voltage regulation. The alarm's trigger voltage is adjusted in response to variations in the regulator's output current.
    Type: Grant
    Filed: April 12, 1996
    Date of Patent: September 9, 1997
    Assignee: Analog Devices, Inc.
    Inventors: Peter S. Henry, Evaldo M. Miranda
  • Circuit for providing programmable hysteresis levels
    Patent number: 5617050
    Abstract: A circuit for providing programmable hysteresis levels is disclosed. The circuit includes comparators for producing output signals when an input signal crosses respective set points and a hysteresis circuit for establishing a hysteresis in the output signals. When a comparator's output signal is "on", the input signal is shifted by a hysteresis differential. The output signal is terminated when the shifted input signal returns to the set point. The hysteresis circuit includes a programmable hysteresis input for adjusting the hysteresis differential to different preset and intermediate hysteresis levels.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: April 1, 1997
    Assignee: Analog Devices, Inc.
    Inventors: Andrew Jenkins, Peter S. Henry, Gaylin M. Yee
  • Method for providing programmable hysteresis levels
    Patent number: 5610545
    Abstract: A method for providing programmable hysteresis levels includes producing output signals when an input signal crosses respective set points and establishing a hysteresis in the output signals. When a comparator's output signal is "on", the input signal is shifted by a hysteresis differential. The output signal is terminated when the shifted input signal returns to the set point. A programmable hysteresis input is adjusted to set the hysteresis differential to different preset and intermediate hysteresis levels.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: March 11, 1997
    Assignee: Analog Devices, Inc.
    Inventors: Andrew Jenkins, Peter S. Henry, Gaylin M. Yee
  • BiCMOS output stage with improved output voltage signal
    Patent number: 5146181
    Abstract: The output stage for a feedback amplifier has a diode circuit to provide quiescent current to the output transistors, and a diode turnoff circuit that renders the diodes non-conductive for an input signal that sends the stage output voltage low. A swing transistor between the stage's output terminal and a low voltage bus is actuated by the same input signal to drive the output voltage to the level of the low voltage bus. Both the diode turnoff circuit and the swing transistor are preferably MOSFETs.
    Type: Grant
    Filed: September 24, 1991
    Date of Patent: September 8, 1992
    Assignee: Analog Devices, Inc.
    Inventors: Derek F. Bowers, Peter S. Henry