Abstract
This paper reports a novel flexible current clamp sensor with 480 turns silver paste coil (line/space = 50/50 μm) formed by through-holes and screen-printing technologies. Using screen-printing techniques, fine stripe patterns could be formed on a 50-mm-long and 10-mm-wide polyimide film in few seconds. Coil resistance between their contact pads is about 2.3 kΩ. When the value of a primary current was 20 A, the output voltage was 22.6 mV. Furthermore, the output voltage changed linearly with the changing of the primary current in the 0–20 A range. The sensor is developed using only coating, through-holes laser drilling, and screen-printing technologies. Therefore it can be fabricated by a reel-to-reel continuous film processing system.
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Acknowledgments
This work was conducted as one of the New Energy and Industrial Technology Development Organization (NEDO) projects, “Green Sensor Network System Technology Development Project”.
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Yamashita, T., Zhang, Y., Itoh, T. et al. Development of thin film based flexible current clamp sensor using screen-printed coil. Microsyst Technol 22, 577–581 (2016). https://doi.org/10.1007/s00542-015-2601-9
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DOI: https://doi.org/10.1007/s00542-015-2601-9