Chapter 8 Feedback3 - Chapter 8 Feedback Introduction 8.1...

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Chapter 8 Feedback Introduction 8.1 The general feedback structure 8.2 Some properties of negative feedback 8.3 The four basic feedback topologies 8.4 The series-shunt feedback amplifier 8.5 The series-series feedback amplifier 8.6 The shunt-shunt and shunt-series feedback amplifier 8.10 Stability study using bode plot 8.11 Frequency compensation
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The practical Shunt-Shunt feedback ampl ifier
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Example 8.3
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The shunt-series configuration Fig 8.22 Ideal structure for the shunt–series feedback amplifier. ( 29 β A R R A R R A A I I A o of i if S o f + = + = + = = 1 1 1
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A practical shunt-series feedback am plifier
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Example 8.4
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summary
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The method of finding A circuit h,z,r,g parameter method for two-port feedback netw ork. Equivalent circuit method: Ø Find the feedback network; Ø Find the feedback network equivalent load Resistance to amplif ier input, for output voltage sampling feedback, output shor t-circuit (Vo=0); for current sampling feedback, output Io o pen-circuit (Io=0). Ø Find the feedback network equivalent load Resistance to amplif ier output, for input voltage mixing feedback, it should be di sconnected from input to feedback network (Ii=0); for inpu t current mixing feedback, let input connect to ground to d isconnect from input signal to feedback network.
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引引引引引引引引引引 Ø 为为为为为为为为为为为为
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This note was uploaded on 03/02/2012 for the course EI 207 taught by Professor Chengjianping during the Fall '10 term at Shanghai Jiao Tong University.

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Chapter 8 Feedback3 - Chapter 8 Feedback Introduction 8.1...

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