Experiment 4 Lab ManualAmerican International University- BangladeshDepartment of Electrical and Electronic EngineeringEEE 2210: Analog Electronics1 LabLaboratoryTitle: Study of feedback amplifier CircuitIntroduction: In this experiment the effect of negative feedback on input-output impedance and bandwidth of voltageseries feedback amplifier and current series feedback amplifier is analyzed. Here we are using a two stageamplifier for this purpose. At first frequency response curve of the amplifier without feedback is plottedexperimentally. Then frequency response curves of voltage series feedback amplifier and current seriesfeedback amplifier are plotted experimentally. Then the effect of negative feedback on the frequencyresponse is analyzed. Theory and Methodology: When any increase in the output signal results into the input in such a way as to cause thedecrease in the output signal, the amplifier is said to have negative feedback.The advantages of providing negative feedback are that the transfer gain of the amplifier with feedbackcan be stabilized against variations in the hybrid parameters of the transistor or the parameters of the otheractive devices used in the circuit. The most advantage of the negative feedback is that by proper use ofthis, there is significant improvement in the frequency response and in the linearity of the operation of theamplifier. The disadvantage of the negative feedback is that the voltage gain is decreased.