Transcription of Capacitive Sensors
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Capacitive Sensors copyright 6-26-00 L. K. Baxter revised 7-20-00. 1 Introduction Capacitive Sensors can directly sense a variety of things motion, chemical composition, electric field and, indirectly, sense many other variables which can be converted into motion or dielec- tric constant, such as pressure, acceleration, fluid level, and fluid composition. They are built with conductive sensing electrodes in a dielectric, with excitation voltages on the order of five volts and detection circuits which turn a capacitance variation into a voltage, fre- quency, or pulse width variation. The range of application of Capacitive Sensors is extraordinary.
Jul 20, 2000 · Capacitive Sensors 1 Capacitive Sensors copyright 6-26-00 L. K. Baxter revised 7-20-00 1 Introduction Capacitive sensors can directly sense a variety of …
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