'Feedback circuit' presentation slideshows

Chapter 3 Feedback Amplifiers

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Chapter 3 Operational Amplifiers 3A Properties of operational Amplifiers

Chapter 3 Operational Amplifiers 3A Properties of operational Amplifiers OP Amp. ; a class of amplifiers having the following properties : (1) Large open-loop gains(104 to 106) (2) High input impedance (1~106M?) (3) Low output impedance(10~100?)

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Motivation

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Class 21

Class 21. Problem 3 The following data of an asymmetrical amplifier are given: A voc =-50; R g =0.5k ? ; R in =R o =R L = 2 k ? . The next resulting parameters are to be realised by the use of negative feedback: A i *=5; R in * ? 0.5k ? ; R o * ? 5k ? .

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