Distinguish between positive and negative feedbacks. List out the characteristics of OP-AMP.
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This page compares Negative feedback vs Positive feedback and mentions difference between Negative feedback and Positive feedback in amplifiers. It mentions advantages and disadvantages of negative feedback over positive feedback.
As we know feedback is process in which part or portion of output signal is fed back to input port. It is used to control dynamic behaviour of the circuit or system.
There are two types of feedback in amplifier.
• Positive feedback
• Negative feedback
If original input signal and feedback signal are in phase, the feedback type is known as positive feedback. It tends to increase the output.
If original input signal and feedback signal are out of phase, the feedback type is known as negative feedback. It tends to reduce the output.
Depending upon sampling type and mixing networks, feedback amplifiers are categorized as follows.
• Voltage series feedback
• Current series feedback
• Current shunt feedback
• Voltage shunt feedback
As we know feedback is process in which part or portion of output signal is fed back to input port. It is used to control dynamic behaviour of the circuit or system.
There are two types of feedback in amplifier.
• Positive feedback
• Negative feedback
If original input signal and feedback signal are in phase, the feedback type is known as positive feedback. It tends to increase the output.
If original input signal and feedback signal are out of phase, the feedback type is known as negative feedback. It tends to reduce the output.
Depending upon sampling type and mixing networks, feedback amplifiers are categorized as follows.
• Voltage series feedback
• Current series feedback
• Current shunt feedback
• Voltage shunt feedback
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