Feedback
connection types
• Voltage series feedback
• Voltage shunt feedback
• Current series feedback
• Current shunt feedback
Ø Here voltage
refers to small part of voltage as input to the feedback network
Ø Current refers
to tapping some part of output current through feedback
network.
Ø Series refers to
connecting feedback signal in series with the input signal
voltage.
Ø Shunt refers to
connecting feedback signal in shunt with the input signal
voltage
Ø Series feedback
connections increases the input resistance
Ø Shunt feedback
connections decreases the input resistance.
Voltage series feedback Af=Vo/Vs
Voltage shunt feedback
Current series feedback
Current shunt feedback
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