A study of a high-resolution linear circuit for capacitive sensors
نویسنده
چکیده
A circuit for capacitance measurements is described. The circuit permits offset capacitance compensation using a dc voltage. The electronic circuitry with its testing is described. The output voltage is a linear function of the capacitance measured. Experimental data show good agreement with values predicted by the linear formula. Experiments show it is possible to measure capacitance changes with a resolution of a few femtofarads (fF).
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ورودعنوان ژورنال:
- IEEE Trans. Instrumentation and Measurement
دوره 48 شماره
صفحات -
تاریخ انتشار 1999