Self-integrating inductive loop for measuring high frequency pulses Articles uri icon

publication date

  • August 2011

start page

  • 1

end page

  • 5

issue

  • 8 (085102)

volume

  • 82

international standard serial number (ISSN)

  • 0034-6748

electronic international standard serial number (EISSN)

  • 1089-7623

abstract

  • High frequency pulses can be measured by means of inductive sensors. The main advantage of these sensors consists of non-contact measurements that isolate and protect measuring equipment. The objective of this paper is to present the implementation of an inductive sensor for measuring rapidly varying currents. It consists of a rectangular loop with a resistor at its terminals. The inductive loop gives the derivative of the current according to Faraday's law and the resistor connected to the loop modifies the sensor's frequency response to obtain an output proportional to the current pulse. The self-integrating inductive sensor was validated with two sensors, a non-inductive resistor and a commercial high frequency current transformer. The results were compared to determine the advantages and drawbacks of the probe as an adequate inductive transducer.

keywords

  • detectors ; electric resistors ; electric currents ; electric transformers ; transducers ; bandwidths ; resonance