Current Shunt Feedback Amplifier Circuit: Current Shunt Feedback Amplifier Circuit is also known as series-derived shunt fed feedback or current shunt inverse feedback. In this circuit, the feedback network picks up a part of the…

Current Series Feedback Amplifier Circuit: Current Series Feedback Amplifier Circuit is also known as series-derived series fed feedback. In such a feedback circuit, a part of the output current is made to develop a voltage…

Voltage Shunt Feedback Amplifier Circuit: Voltage Shunt Feedback Amplifier Circuit is also known as shunt-derived shunt fed feedback or voltage shunt inverse feedback. Here, a small portion of the output voltage is coupled back to…

Voltage Series Feedback Amplifier or Shunt Derived Series Fed Feedback Amplifier: Voltage Series Feedback Amplifier Circuit is also called the shunt-derived series-fed feedback. Here the amplifier and feedback network are connected in series-parallel. A fraction…

Effect of Negative Feedback on Bandwidth: The effect of negative feedback on bandwidth is given below as From Eq. (19.8) voltage gain with feedback is given as and from the above result it may be…

Effect of Negative Feedback on Output Impedance: Just as high input impedance is advantageous to an amplifier, so is low output impedance. With lower output impedance, the amplifier is better suited to drive a low…

Effect of Negative Feedback on Input Impedance: High input impedance is always desirable in an amplifier as it will not load the preceding stage or the input voltage source. Such a desirable characteristic can be…

Feedback Amplifier - Block Diagram, Definition, Operation and Types: Figure 19.7 represents the block diagram of an Feedback Amplifier. The output quantity (either voltage or current) is sampled by means of a suitable sampling network…