Question: = In the following circuit, a capacitive sensor is modeled by C, in series with resistance Rs. An identical sensor is used as a
= In the following circuit, a capacitive sensor is modeled by C, in series with resistance Rs. An identical sensor is used as a dummy unit to compensate for the undesired noise. A 5-V 400Hz source is used to bias this arrangement. It is given that Rs = R 10 Q2, R R3 = 1 kQ, and nominal capacitance of sensors is 10 pF. (a) Determine the baseline of the system. (b) If the active sensor capacitance Cs changes by 0.5 pF then determine the output voltage. Vbias R mw Vout
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