Hello every body, I am facing a problem in designing a circuit to measure changing capacitance, I hope that now I have reached at right place for true help.
I want to measure changing capacitance between a diaphragm and ceramic plate. My capacitance range is 10pF to 50pF. I want to measure change in capacitance less then 0.01pF. I need a circuit which takes 12-30V as input and gives 4-20mA current as out put.
I want to measure changing capacitance between a diaphragm and ceramic plate. My capacitance range is 10pF to 50pF. I want to measure change in capacitance less then 0.01pF. I need a circuit which takes 12-30V as input and gives 4-20mA current as out put.