A study of a high-resolution linear circuit for capacitive sensors

نویسنده

  • Nils Karlsson
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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عنوان ژورنال:
  • IEEE Trans. Instrumentation and Measurement

دوره 48  شماره 

صفحات  -

تاریخ انتشار 1999