Identify the feedback topology of Amplifiers.

 There are four basic feedback topologies. They are
1) Voltage-Series
2) Voltage -Shunt
3) Current- Series
4) Current-Shunt.

But wait, it doesn't stop there. Many textbooks use different nomenclature. So let's see how to get the respective synonyms for the above topologies.

The feedback topologies are also called by the following names.

1) Voltage-Series(Series-Shunt)
2) Voltage -Shunt(Shunt-Shunt)
3) Current- Series(Series-Series)
4) Current-Shunt. (Shunt-Series).


Identify the feedback of Amplifiers.

1) Feedback topology of Non Inverting Amplifer.

Here the feedback signal is derived from Voltage(Voltage driven). The feedback signal is applied as voltage(Series) at the input Hence the feedback topology is Voltage -Series or Series-Shunt.

2) Feedback topology of Inverting Amplifier

Here the feedback signal is derived from Voltage(Voltage driven). The feedback signal is applied as 

Current(Shunt). Hence the feedback topology is  Voltage -Shunt or Shunt -Shunt.

Note :

Non-inverting Amplifier uses Voltage Series topology

Inverting Amplifier uses Voltage Shunt topology