Q4. STC network formed by sensor and amplifier Hassan measures the output of a sensor with no load on it, and finds that the signal has 1 V amplitude. He then loads the sensor with a 1 k resistor and finds that the sensor output has now dropped to 0.1 V amplitude. He couples the sensor to an amplifier using a 1 uF capacitor. The input resistance of the amplifier is 10 k. Derive the transfer function of the STC network formed by the sensor output resistance (Rs), the coupling capacitance (Cc), and the amplifier input resistance (Ra). Draw its frequency response in terms of a Bode plot. What is the DC gain and 3 dB frequency of this STC network? Is it high pass or low pass? HINTS: First sentence tells amplitude of sensor signal, vs Second sentence should help you find out the sensor output resistance, Rs Upon connecting the sensor to the amplifier, the equivalent circuit is: Sensor Coupling cap Amplifier RS w Ca HH Ra J e C S B 銜 P