Patents Assigned to PROVA INSTRUMENTS INC.
  • Publication number: 20200333383
    Abstract: A current detecting module includes a circular shell with a ferrite core, a first sensor element, and a second sensor element disposed within. The first sensor element and the second sensor element sense the magnetic field confined in the magnetic circuit formed by the ferrite core, and generate a first sensing signal and a second sensing signal respectively. A current tester includes a device body, and the current detecting module is assembled with the device body. The device body includes a switching element, a monitor module and a signal processing module. The signal processing module receives the first sensing signal or the second sensing signal, and controls the monitor module to display a measured value accordingly. With two different sensing signals, the current detecting module or the current tester can be used to measure different ranges of currents and achieve high accuracy at the same time.
    Type: Application
    Filed: April 19, 2019
    Publication date: October 22, 2020
    Applicant: PROVA INSTRUMENTS INC.
    Inventor: Lee-Fei CHEN
  • Patent number: 10788519
    Abstract: A current detecting module includes a circular shell with a ferrite core, a first sensor element, and a second sensor element disposed within. The first sensor element and the second sensor element sense the magnetic field confined in the magnetic circuit formed by the ferrite core, and generate a first sensing signal and a second sensing signal respectively. A current tester includes a device body, and the current detecting module is assembled with the device body. The device body includes a switching element, a monitor module and a signal processing module. The signal processing module receives the first sensing signal or the second sensing signal, and controls the monitor module to display a measured value accordingly. With two different sensing signals, the current detecting module or the current tester can be used to measure different ranges of currents and achieve high accuracy at the same time.
    Type: Grant
    Filed: April 19, 2019
    Date of Patent: September 29, 2020
    Assignee: PROVA INSTRUMENTS INC.
    Inventor: Lee-Fei Chen