A Fan-Type Variable Capacitor Rotation Angle Sensor for University Physics Experiments

Autor/inn/en	Sakon, Takuo; Inoguchi, Kaname
Titel	A Fan-Type Variable Capacitor Rotation Angle Sensor for University Physics Experiments
Quelle	In: Physics Education, 55 (2020) 3, Artikel 035004 (7 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0031-9120
Schlagwörter	Physics; Science Instruction; Science Experiments; College Science; Laboratory Equipment; Science Laboratories; Laboratory Experiments + Suchen Sie Ihr Suchwort? Physik; Teaching of science; Science education; Natural sciences Lessons; Naturwissenschaftlicher Unterricht; Laborausstattung; Laboratory work; Laborarbeit
Abstract	In this article, we examine the rotation angle dependence of a hand-made fan-type variable capacitor for use in physics experiments in university classes. We made two circular bakelite plates, and the two terminal plates of the capacitor were 90° fan-type copper disks. The capacitance varied linearly with the rotation angle. The standard deviation from the linear fit was 1.4%, which was probably generated by the fact that the capacitor plates were not perfectly circular. Furthermore, we made a rotation angle sensing system using an AC high-pass filter. We selected the AC frequencies of 1 kHz and 100 Hz, which are easy to use in physics experiments. These experimental results also showed a linear relationship. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2022/1/01