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Apparatus, method and device for sensing DC currents

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • G01R-015/18
  • G01R-015/20
  • G01R-019/20
  • G01R-015/14
출원번호 US-0134328 (2016-04-20)
등록번호 US-9618541 (2017-04-11)
발명자 / 주소
  • Nguyen, Huy D.
  • Lee, Tom Lik-Chung
출원인 / 주소
  • NEILSEN-KULJIAN, INC.
대리인 / 주소
    TIPS Group
인용정보 피인용 횟수 : 0  인용 특허 : 45

초록

A magnetometer that senses low level currents flowing in a conductor or wire includes two cores with excitation windings on each core that are connected in series but which are wound in opposite orientations. A periodic alternating current drives the windings. Since the windings are in series but op

대표청구항

1. An apparatus for sensing D.C. currents comprising: a dual core toroid including a first core defining a first circumference, a first central axis and a first central plane perpendicular to the first central axis, the first core being at least partially wound with a first insulated wire, a second

이 특허에 인용된 특허 (45)

  1. Fougere, Alan J., Apparatus and method for the measurement of electrical conductivity and dielectric constant of high impedance fluids.
  2. DeCramer John E. ; Gass Franklin Bradley, Coupling device connecting an unbalanced signal line to a balanced signal line.
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  9. J��rgensen,Hans Erik, Detector circuit to be used for measuring current.
  10. Nguyen, Huy D.; Lee, Tom Lik-Chung, Digitally controlled high-current DC transducer.
  11. Narod Barry (Vancouver CAX), Direct-coupled fluxgate current sensor.
  12. Lipman Kenneth (West Hartford CT), Dual core magnetic amplifier sensor.
  13. Condon Joseph H. (Summit NJ), Electromagnetic arrangement for measuring electrical current.
  14. Henry James L. (Whippany NJ), Electromagnetic arrangement for measuring electrical current.
  15. Akiyama Shigeyuki (Miyanohigashi JPX) Tsutsui Tatsuhide (Miyanohigashi JPX), Electromagnetic induction-type conductivity meter with improved calibration with auxiliary circuit.
  16. Fortner, Michael W., Electronic interface for use with dual electrode capacitance diaphragm gauges.
  17. Dinger Edward H. (Waynesboro VA), Electronic-magnetic current isolator circuit.
  18. Bartington,Geoffrey William, Fluxgate and fluxgate magnetometers.
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  24. Fraley, John, High temperature magnetic amplifiers.
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  36. Burdick, Neal M., Method and apparatus for measuring a DC current in a wire without making a direct connection to the wire.
  37. Wang, Changlin; Wang, Fengjin; Wang, Xiaokai; Ammann, Jürgen, Method and device for inductive conductivity measurements of a fluid medium.
  38. Takatsuji, Yusuke, Multi-axis fluxgate magnetic sensor.
  39. Choi,Won youl; Choi,Sang on; Hwang,Jun sik; Kang,Myung sam, Printed circuit board integrated with a two-axis fluxgate sensor and method for manufacturing the same.
  40. Beranger,Marc, Pulsed excitation and sampled detection fluxgate type magnetometer.
  41. Nguyen, Huy D.; Lee, Tom Lik-Chung, Self-powered current sensing switch with digital setpoint.
  42. Watson William S. (3026 Aspen Ct. Eau Claire WI 54703), Single core triaxial flux-gate magnetometer.
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