A Fan-Type Variable Capacitor Rotation Angle Sensor for University Physics Experiments
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| Title: | A Fan-Type Variable Capacitor Rotation Angle Sensor for University Physics Experiments |
|---|---|
| Language: | English |
| Authors: | Sakon, Takuo, Inoguchi, Kaname |
| Source: | Physics Education. May 2020 55(3). |
| Availability: | IOP Publishing. 190 North Independence Mall West Suite 601, Philadelphia, PA 19106. Tel: 215-627-0880; Fax: 215-627-0879; e-mail: ped@ioppublishing.org; Web site: https://iopscience.iop.org/journal/0031-9120 |
| Peer Reviewed: | Y |
| Page Count: | 7 |
| Publication Date: | 2020 |
| Document Type: | Journal Articles Reports - Descriptive |
| Education Level: | Higher Education Postsecondary Education |
| Descriptors: | Physics, Science Instruction, Science Experiments, College Science, Laboratory Equipment, Science Laboratories, Laboratory Experiments |
| DOI: | 10.1088/1361-6552/ab6c3f |
| ISSN: | 0031-9120 |
| 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. |
| Abstractor: | As Provided |
| Entry Date: | 2020 |
| Accession Number: | EJ1243231 |
| Database: | ERIC |
| 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. |
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| ISSN: | 0031-9120 |
| DOI: | 10.1088/1361-6552/ab6c3f |
