TOPIC/SUBJECT : Q1)An amplifier system without feedback has the following specifications: Open loop gain: 90 Input imped
Posted: Tue Jul 12, 2022 8:36 am
TOPIC/SUBJECT :
Q1)An amplifier system without feedback has the followingspecifications:Open loop gain: 90Input impedance: 25kΩOutput impedance: 5kΩ(i) If the amplifier system employs negative feedback and the closeloop gain is9.5, calculate the system feedback factor, β.(2 marks)(ii) Suppose the negative feedback topology used for the amplifiersystem inQ1(a)(i) is a current shunt feedback, determine the amplifier,input impedanceand output impedance of the amplifier with feedback.(6 marks)
Q1)An amplifier system without feedback has the followingspecifications:Open loop gain: 90Input impedance: 25kΩOutput impedance: 5kΩ(i) If the amplifier system employs negative feedback and the closeloop gain is9.5, calculate the system feedback factor, β.(2 marks)(ii) Suppose the negative feedback topology used for the amplifiersystem inQ1(a)(i) is a current shunt feedback, determine the amplifier,input impedanceand output impedance of the amplifier with feedback.(6 marks)