Types of
feedback connections, voltage shunt, voltage
series, current series
and current shunt:
block diagram, circuit diagram, and
operation
I recommend to please read my previous two articles regarding “Principle of feedback Amplifier” and “Types of feedback: negative and positive feedback, advantages and disadvantages of negative feedback” for better understanding of this topic.
As we discussed, positive and negative feedback are two basic types of feedback and there are four subtypes of negative feedback as follows
1. Voltage series negative feedback
2. Voltage shunt negative feedback
3. Current series negative feedback
4. Current shunt negative feedback
1. Voltage series negative feedback
Figure shows diagram of voltage series negative feedback system in which feedback network is used provide fraction of output back to the input. Voltage is always taken in parallel or across; hence output voltage is taken in parallel and as name indicates feedback is provided in series with the input.
2. Voltage shunt negative feedback
Figure shows diagram of voltage shunt negative feedback system in which feedback network is used provide fraction of output back to the input. Voltage is always taken in parallel or across; hence output voltage is taken in parallel and as name indicates feedback is provided in shunt (parallel) with the input.
3. Current series negative feedback
Figure shows diagram of current series negative feedback system in which feedback network is used provide fraction of output back to the input. Current is always taken in series; hence output is taken in series and as name indicates feedback is provided in series with the input.
4. Current shunt negative feedback
Figure shows diagram of current shunt negative feedback system in which feedback network is used provide fraction of output back to the input. Current is always taken in series; hence output is taken in series and as name indicates feedback is provided in shunt (parallel) with the input.
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