Mohd Mawardi, Saari and Nazatul Sharreena, Suhaimi and Saifudin, Razali and Nurul Akmal, Che Lah and Sakai, Kenji and Kiwa, Toshihiko and Tsukada, Keiji (2018) Development of a resonant excitation coil of AC magnetometer for evaluation of magnetic fluid. Journal of Telecommunication, Electronic and Computer Engineering, 10 (1-2). pp. 127-130. ISSN 2180-1843(print); 2289-8131(online). (In Press / Online First) (In Press / Online First)
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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.
| Item Type: | Article |
|---|---|
| Additional Information: | Indexed by Scopus |
| Uncontrolled Keywords: | Coil; Impedance; Magnetometer; Resonant circuit |
| Subjects: | Q Science > Q Science (General) |
| Faculty/Division: | Faculty of Electrical & Electronic Engineering Faculty of Manufacturing Engineering |
| Depositing User: | Dr. Mohd Mawardi Saari |
| Date Deposited: | 03 Aug 2018 04:00 |
| Last Modified: | 03 Aug 2018 04:00 |
| URI: | http://umpir.ump.edu.my/id/eprint/20627 |
| Download Statistic: | View Download Statistics |
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