Study and Analysis of Small Signal Parameters, Slew Rate and Power Dissipation of Bipolar Junction Transistor and Complementary MOS Amplifiers With and Without Negative Feedback Using T-Spice

A feedback amplifier is one in which the output signal is sampled and fed back to the input to form an error signal that drives the amplifier. Feedback is a method in which a portion of the output returned to the input in order to modify the characteristics of the device. Feedback can applied to transistor amplifier circuits to modify their performance characteristics such as gain, bandwidth, input and output impedance etc. . There are number of ways by which a signal can be derived from output and can be returned to input.