Title :
High sensitivity 50 Hz-1 MHz probe for B and dB/dt
Author :
Sergeant, Peter ; Van den Bossche, Alex
Author_Institution :
Lab. for Electr. Energy, Ghent Univ., Belgium
Abstract :
An accurate broadband sensor for the analysis of magnetic induction B in the range 10 nT-5 mT is presented. Choosing appropriate amplifier circuits allows measurement of either B or dB/dt, in the frequency range 50 Hz-1 MHz, which makes it possible to detect very weak high-frequency fields with attenuation of the 50 Hz power frequency. The probe is also suitable for on-site measurements of common-mode currents in cables with a resolution of about 10 mA. It has high immunity against electric fields and is useful both for time-domain measurements and for frequency-domain measurements.
Keywords :
coils; electromagnetic compatibility; electromagnetic induction; frequency-domain analysis; magnetic variables measurement; probes; time-domain analysis; 10 nT to 5 mT; 50 Hz to 1 MHz; amplifier circuits; broadband sensor; dB/dt measurement; electric fields immunity; frequency-domain measurements; magnetic induction analysis; magnetic induction measurement; power frequency attenuation; time-domain measurements; very weak high-frequency fields; Attenuation measurement; Broadband amplifiers; Electric variables measurement; Frequency measurement; High power amplifiers; Magnetic analysis; Magnetic field measurement; Magnetic sensors; Probes; VHF circuits;
Conference_Titel :
Electromagnetic Compatibility, 2002. EMC 2002. IEEE International Symposium on
Conference_Location :
Minneapolis, MN, USA
Print_ISBN :
0-7803-7264-6
DOI :
10.1109/ISEMC.2002.1032447
