Development of a resonant excitation coil of AC magnetometer for evaluation of magnetic fluid

Mohd Mawardi Saari, Nazatul Sharreena Suhaimi, Saifudin Razali, Nurul Akmal Che Lah, Kenji Sakai, Toshihiko Kiwa, Keiji Tsukada

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A high-homogeneity excitation coil with a resonant circuit for AC magnetometer is developed. A solenoid coil is designed to produce a high-homogeneity and strong excitation field using a resonant frequency method. The solenoid coil is fabricated with a Litz wire to suppress the increase of AC resistance due to the skin and proximity effects in the high-frequency region. The Litz wire is composed of 60 strands of copper wires with 0.1-mm diameter. The resonant frequency method is applied to cancel the reactance component by connecting the excitation coil with a capacitor in a series configuration. To enable excitation of the magnetic field at multiple frequencies, a resonant circuit consists of multiple values of resonant capacitors is constructed. The fabricated excitation coil showed a high homogeneity of the magnetic field and was able to maintain a constant resonant current up to 32.5 kHz.

Original languageEnglish
Pages (from-to)127-130
Number of pages4
JournalJournal of Telecommunication, Electronic and Computer Engineering
Volume10
Issue number1-2
Publication statusPublished - Jan 1 2018

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Magnetic fluids
Magnetometers
Resonant circuits
Solenoids
Wire
Natural frequencies
Capacitors
Magnetic fields
Skin
Copper

Keywords

  • Coil
  • Impedance
  • Magnetometer
  • Resonant Circuit

ASJC Scopus subject areas

  • Hardware and Architecture
  • Computer Networks and Communications
  • Electrical and Electronic Engineering

Cite this

Development of a resonant excitation coil of AC magnetometer for evaluation of magnetic fluid. / Saari, Mohd Mawardi; Suhaimi, Nazatul Sharreena; Razali, Saifudin; Che Lah, Nurul Akmal; Sakai, Kenji; Kiwa, Toshihiko; Tsukada, Keiji.

In: Journal of Telecommunication, Electronic and Computer Engineering, Vol. 10, No. 1-2, 01.01.2018, p. 127-130.

Research output: Contribution to journalArticle

Saari, Mohd Mawardi ; Suhaimi, Nazatul Sharreena ; Razali, Saifudin ; Che Lah, Nurul Akmal ; Sakai, Kenji ; Kiwa, Toshihiko ; Tsukada, Keiji. / Development of a resonant excitation coil of AC magnetometer for evaluation of magnetic fluid. In: Journal of Telecommunication, Electronic and Computer Engineering. 2018 ; Vol. 10, No. 1-2. pp. 127-130.
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