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Analog Electronics

Q1:
The circuit shown is

A voltage series feedback amplifier

B transconductance amplifier

C transresistance amplifier with open circuit mutual resistance RF

D transresistance amplifier with short circuit mutual resistance RF

ANS:C - transresistance amplifier with open circuit mutual resistance RF

Circuit can be redrawn as. This is an inverting amplifier with inverting terminal virtual ground. Hence, Vo = - iin RF This RF is termed as mutual resistance here, Rm. output voltage with load Where R0 is output Resistance of Op-Amp. if RL >> R0 output terminals become open circuited. and VoL = Rm.Iin where Rm work as mutual resistance.



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