Patents by Inventor Valentin Gennadievich Varnak

Valentin Gennadievich Varnak 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).

  • Two-wire industrial process field device power supply circuitry
    Patent number: 11579641
    Abstract: An industrial process field device includes first and second loop terminals configured to couple to a two-wire process control loop. Device circuitry is powered from the process control loop and monitors a process variable or controls a control device. A current regulator is in series with the loop terminals, and regulates a loop current. A first shunt voltage regulator regulates a voltage across the device circuitry. Supplemental circuitry is connected in series with the first shunt voltage regulator and the second loop terminal, and is powered by power from the two-wire process control loop shunted through the first shunt voltage regulator. A second shunt voltage regulator is connected in series with the first shunt voltage regulator and the second loop terminal, and in parallel with the supplemental circuitry, and regulates a voltage across the supplemental circuitry.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: February 14, 2023
    Assignee: ROSEMOUNT INC.
    Inventors: Yevgeny Aleksandrovich Matveyev, Pavel Pavlovich Schmidt, Nikolay Alekseevich Isaev, Sergey Valerievich Dubrovin, Valentin Gennadievich Varnak
  • TWO-WIRE INDUSTRIAL PROCESS FIELD DEVICE POWER SUPPLY CIRCUITRY
    Publication number: 20210303010
    Abstract: An industrial process field device includes first and second loop terminals configured to couple to a two-wire process control loop. Device circuitry is powered from the process control loop and monitors a process variable or controls a control device. A current regulator is in series with the loop terminals, and regulates a loop current. A first shunt voltage regulator regulates a voltage across the device circuitry. Supplemental circuitry is connected in series with the first shunt voltage regulator and the second loop terminal, and is powered by power from the two-wire process control loop shunted through the first shunt voltage regulator. A second shunt voltage regulator is connected in series with the first shunt voltage regulator and the second loop terminal, and in parallel with the supplemental circuitry, and regulates a voltage across the supplemental circuitry.
    Type: Application
    Filed: March 26, 2020
    Publication date: September 30, 2021
    Inventors: Yevgeny Aleksandrovich Matveyev, Pavel Pavlovich Schmidt, Nikolay Alekseevich Isaev, Sergey Valerievich Dubrovin, Valentin Gennadievich Varnak