Process Engineering Division – Instrumentation and Automation Section – Daily Question – Question dated 2020-07-24
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Process Engineering Division – Instrumentation and Automation Section – Daily Question – Question from 2020-07-24: Discussion question: 185. What is feedback?
A portion of the energy in the amplifier’s output circuit is sent back to the input circuit in order to enhance or weaken the effect of the input signal. Positive feedback is what enhances the effect of the input signal ； Negative feedback is what reduces the effect of the input signal. Positive feedback is often used to generate oscillations and to receive weak signals ； Negative feedback can stabilize amplification and reduce distortion, which is why it is widely used in amplifiers.
A portion of the energy in the amplifier’s output circuit is sent back to the input circuit in order to enhance or weaken the effect of the input signal. Positive feedback is what enhances the effect of the input signal ； Negative feedback is what reduces the effect of the input signal. Positive feedback is often used to generate oscillations and to receive weak signals ； Negative feedback can stabilize amplification and reduce distortion, which is why it is widely used in amplifiers.
A portion of the energy in the amplifier’s output circuit is sent back to the input circuit in order to enhance or weaken the effect of the input signal. Positive feedback is what enhances the effect of the input signal ； Negative feedback is what reduces the effect of the input signal. Positive feedback is often used to generate oscillations and to receive weak signals ； Negative feedback can stabilize amplification and reduce distortion, which is why it is widely used in amplifiers.
Returning part of the system’s output to the system input in some way is called feedback; a system with such a structure is known as a feedback system. If the feedback component weakens the system’s input effect, it is called negative feedback; if it enhances the system’s input effect, it is called positive feedback.
The output of the system is fed back to its input after being detected; this is called feedback.
The process of sending back a part or all of the output signal of a system, in a certain manner and through a specific path, to the input side of the system as part of the input signal is called feedback.
Feedback refers to the process in which the output of a control system is returned to the system’s input through a specific pathway, where it is combined with the original input to affect the system’s net input.
A portion of the energy in the amplifier’s output circuit is sent back to the input circuit in order to enhance or weaken the effect of the input signal. Positive feedback is what enhances the effect of the input signal ； Negative feedback is what reduces the effect of the input signal. Positive feedback is often used to generate oscillations and to receive weak signals ； Negative feedback can stabilize amplification and reduce distortion, which is why it is widely used in amplifiers.
The process of sending back a part or all of the output signal of a system, in a certain manner and through a specific path, to the input side of the system as part of the input signal is called feedback.