Patents by Inventor Eirik L. Gude

Eirik L. Gude 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).

  • Optically isolated latching solid state relay with low on resistance and linear operation
    Patent number: 10833675
    Abstract: A latching relay includes a supply terminal, a load terminal, first and second coupling circuits, a latch circuit, first and second transistors, and a local supply node coupled to a capacitor. In one example, the supply terminal is coupled to a supply node and the load terminal is coupled to the load. The first and second transistors control the conductivity of a drive transistor coupled to the load. A microcontroller controls the latching relay to switch the load on and off. To enable the load, the microcontroller sinks current from the supply terminal and through the first coupling circuit. While the load is enabled, the capacitor is discharged. The latching relay is operable in a refresh mode in which current is pulsed through the first coupling circuit causing capacitor to be re-charged from the supply terminal. To disable the load, the microcontroller sinks current through the second coupling circuit.
    Type: Grant
    Filed: December 6, 2019
    Date of Patent: November 10, 2020
    Assignee: Littelfuse, Inc.
    Inventors: Michael J. Gambuzza, Eirik L. Gude
  • OPTICALLY ISOLATED LATCHING SOLID STATE RELAY WITH LOW ON RESISTANCE AND LINEAR OPERATION
    Publication number: 20200112309
    Abstract: A latching relay includes a supply terminal, a load terminal, first and second coupling circuits, a latch circuit, first and second transistors, and a local supply node coupled to a capacitor. In one example, the supply terminal is coupled to a supply node and the load terminal is coupled to the load. The first and second transistors control the conductivity of a drive transistor coupled to the load. A microcontroller controls the latching relay to switch the load on and off. To enable the load, the microcontroller sinks current from the supply terminal and through the first coupling circuit. While the load is enabled, the capacitor is discharged. The latching relay is operable in a refresh mode in which current is pulsed through the first coupling circuit causing capacitor to be re-charged from the supply terminal. To disable the load, the microcontroller sinks current through the second coupling circuit.
    Type: Application
    Filed: December 6, 2019
    Publication date: April 9, 2020
    Applicant: Littelfuse, Inc.
    Inventors: Michael J. Gambuzza, Eirik L. Gude
  • Optically isolated latching solid state relay with low on resistance and linear operation
    Patent number: 10523198
    Abstract: A latching relay includes a supply terminal, a load terminal, first and second coupling circuits, a latch circuit, first and second transistors, and a local supply node coupled to a capacitor. In one example, the supply terminal is coupled to a supply node and the load terminal is coupled to the load. The first and second transistors control the conductivity of a drive transistor coupled to the load. A microcontroller controls the latching relay to switch the load on and off. To enable the load, the microcontroller sinks current from the supply terminal and through the first coupling circuit. While the load is enabled, the capacitor is discharged. The latching relay is operable in a refresh mode in which current is pulsed through the first coupling circuit causing capacitor to be re-charged from the supply terminal. To disable the load, the microcontroller sinks current through the second coupling circuit.
    Type: Grant
    Filed: August 19, 2018
    Date of Patent: December 31, 2019
    Assignee: LITTELFUSE, INC.
    Inventors: Michael J. Gambuzza, Eirik L. Gude