what are the different types of Amplifiers with type of feedback used and the block diagram of each.
Answers
Answer:
Types of Feedback Amplifier
The procedure of introducing some device’s output energy fraction from back to the i/p is termed as Feedback. This is mainly used to reduce the noise as well as to make the operation of an amplifier is constant. This amplifier can be classified into two types based on the feedback signal helps such as positive & negative feedback amplifier.
Positive and Negative Amplifiers
Positive and Negative Amplifiers
1.) Positive Feedback Amplifier
The positive feedback can be defined as when the feedback current otherwise voltage is applied for increasing the i/p voltage, then it is named as positive feedback. Direct feedback is another name of this positive feedback. Because positive feedback generates unnecessary distortion; it is not often used in amplifiers. But, it amplifies the original signal power and can be used in oscillator circuits.
2.) Negative Feedback Amplifier
The negative feedback can be defined as if the feedback current otherwise voltage can be applied for reducing the amplifier i/p, then it is called as negative feedback. Inverse feedback is another name of this negative feedback. This kind of feedback is regularly used in amplifier circuits.