Patents by Inventor Richard V. Vesce

Richard V. Vesce 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).

  • Linear current limiter with temperature shutdown
    Patent number: 4800331
    Abstract: A high efficiency current limit circuit comprises a current sensor, a control unit responsive to the current sensor for providing a control signal to a solid-state series pass element which limits load current. A thermal safety circuit provides overtemperature circuit protection. Together, the current limit circuit and thermal safety circuit provide continuous short circuit protection (of indefinite time duration) with automatic recovery upon removal of the short.
    Type: Grant
    Filed: February 12, 1987
    Date of Patent: January 24, 1989
    Assignee: United Technologies Corporation
    Inventors: Richard V. Vesce, Andrew C. Reck
  • Power-On-Reset (POR) circuit
    Patent number: 4788462
    Abstract: A Power-On-Reset (POR) Circuit compares a logic supply voltage to a reference voltage and provides a logic voltage validity signal if the logic voltage is greater than the reference voltage; the circuit delays, on startup, the validity signal for a selected period and then provides a drive signal for driving a solid-state switch which provides an open circuit on the presence of the drive signal, indicating logic voltage validity, and a short circuit in its absence, indicating invalidity; and the circuit immediately disables the drive signal if the logic voltage falls below the reference voltage. The selected start-up delay period is independent of the supply voltage magnitude.
    Type: Grant
    Filed: February 12, 1987
    Date of Patent: November 29, 1988
    Assignee: United Technologies Corporation
    Inventors: Richard V. Vesce, John D. Repp, Jr.
  • High efficiency MOSFET sine wave generator
    Patent number: 4649467
    Abstract: A high efficiency MOSFET sine wave generator is provided using the class D pulse width modulation principle. A triangle wave at f.sub.0 is compared to a variable amplitude sinusoid at about 1/10 f.sub.0 to provide a pulse width modulated signal for driving a pair of power MOSFETS connected for switching a B+ and a B- power supply. The power switch output is LC filtered and fedback for regulating the amplitude of the modulating sinusoid.
    Type: Grant
    Filed: July 31, 1985
    Date of Patent: March 10, 1987
    Assignee: United Technologies Corporation
    Inventors: Richard V. Vesce, John R. Torres
  • High efficiency series regulator
    Patent number: 4618813
    Abstract: A three-terminal series regulator achieves high efficiency by using an enhancement mode P-channel or N-channel FET for the series regulating element, respectively, for positive or negative voltage regulation thereby eliminating the need for a boost voltage and also minimizing the input-to-output voltage differential at high power levels. Short circuit protection is provided using output voltage and current foldback.
    Type: Grant
    Filed: March 4, 1985
    Date of Patent: October 21, 1986
    Assignee: United Technologies Corporation
    Inventors: Richard V. Vesce, John R. Torres
  • Current-limited MOSFET switch
    Patent number: 4593213
    Abstract: A current-limited MOSFET switch is achieved using a zener diode connected from the gate to source of the MOSFET.
    Type: Grant
    Filed: May 25, 1984
    Date of Patent: June 3, 1986
    Assignee: United Technologies Corporation
    Inventors: Richard V. Vesce, John R. Torres