Electronic Circuit Analysis

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Multistage Amplifiers 45 But Output Voltage A = --=-----=v Input Voltage I/Ibl =AI Rcn (Ro) Av=AI= R i1 Rcn = Collector Ressistance of nth stage transistor Ril = Input resistance of I stage amplifier _ 2 Rcn Ap- (AI) . R. I} 2.2.4 Choice of Transistor in a Cascaded Amplifier Configuration By connecting transistor in cascade, voltage gain gets multiplied. But what type of configuration should be used? Common Collector (CC) or Common Base (CB) or Common Emitter (CE)? To get voltage amplification and current amplification, only Common Emitter (CE) configuration is used. Because for Common Collector, the voltage gain is less than 1 for each stage. So the overall amplification is less than 1. Common Base Configuration is also not used since Al is less than 1. RL A =A x v I R. 1 Effective load resistance RL is parallel combination of Rc and Ri of the following stage, (next stage) (since in multi stage connection, the output of one stage is the input to the other stage). This parallel combination is less than R i . Therefore, R L < 1. Rl The current gain AI in common base configuration is hib < 1 or == 1. Therefore overall voltage gain == 1. Therefore Common Base configuration is not used for cascading. So only Common Emitter configuration is used. (h fe > > I) Therefore overall voltage gain and current gains are> 1 in Common Emitter configuration. For a single stage Resistor Capacitor coupled amplifier, bandwidth is (fi - fi) == fi. fi is very small compared to fi. fi is usually of the order of KHz or MHz. fl is of the order of few HZ.
46 Electronic Circuit Analysis n n If hn is the upper 3 db frequency h is the frequency at which _ AM AH - .J2' When n stages of RC coupled amplifiers are connected in cascade, the upper 3db frequency 1 (h)n for which the overall voltage gain falls to J2 of its midband value is, n
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Electronic Circuit Analysis Second
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Copyright © 2008, by Publisher All
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PREFACE TO SECOND EDITION Since pub
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x Many Textbooks are referred while
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xii 2.5 Frequency Effects .........
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xiv Unit - 7 Voltage Regulators ...
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Page 20 and 21: Brief History of Electronics In sci
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High Frequency Transistor Circuits
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High Frequency Transistor (:ircuits
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High Frequency ·Transistor Circuit
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High Frequency Transistor CIraIIts
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High Fri/quency Transistor Circuits
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UNIT - 4 Power Amplifiers In this U
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Power Amplifiers 147 4.1.3 Class B
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Power Amplifiers 149 4.2.2 Transfor
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Power AmpUfiers 151 The assumption
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Power Amplifiers 153 VCC-::::,VCE=V
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Power Amplifiers 155 power. Moreove
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Power Amplifiers 157 In the low fre
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Power Amplifiers v f = Effective in
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Power Amplifiers 161 I max t Ie I m
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Power Amplifiers 163 i., V s ie is
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Power Amplifiers 165 P - V 21m OC-
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Power Amplifiers Po is maximum 2 VC
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Power Amplifiers 169 a pair of clos
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Power Amplifiers 171 Both the trans
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Power Amplifiers 173 Peak collector
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Power Amplifiers 175 A pushpull con
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Power Amplifiers 177 12V 0.8: 1 110
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Power Amplifiers 179 The turns rati
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Power Amplifzers 181 9ja = Junction
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Power Amplifzers 183 I. Amplifiers
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Power Ampiifzers 185 1. What are th
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Power Amplifiers 187 23. TD = ~D; +
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190 Electronic Circuit Analysis 5.1
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192 Electronic Circuit Analysis R ,
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196 Electronic Circuit Analysis Mag
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204 Electronic Circuit Analysu. Sol
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206 Zon Rjl=RolIl\ Fig. 5.17 ro 2 Z
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210 Electronic Circuit Analysis I.
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UNIT - 6 Tuned Amplifiers - II In t
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Tuned Amplifiers - II 21S Let P J =
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Tuned Amplifiers - II 217 But the d
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Tuned Amplifiers - II 219 Neglectin
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Tuned Amplifiers - II 221 Q eff =\-
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Tuned Amplifiers - II 223 C ,..-__-
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Tuned Amplifiers - II 225 For a shu
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Tuned Amplifiers - II 227 1 0) (LA
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Tuned Amplifiers - II 229 r-------p
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Tuned Amplifiers - II 231 Solving f
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Tuned Amplifiers - II 233 So the va
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Tuned Amplifiers - II 235 1. Draw t
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UNIT - 7 Voltage Regulators In this
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Voltage Regulators 239 7.1.1 Differ
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Voltage Regulators 241 I. The nomin
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Voltage Regulators 243 7.1.4 Series
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Voltage Regulators 245 + '13Y .....
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Voltage Regulators 247 V 2 15.6 R ~
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Voltage Regulators ==== The error a
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Voltage Regulators 251 1. The stabi
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Voltage Regulators 253 4. Sampling
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258 Electronic Circuit Analysis No
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260 Electronic Circuit Analysis The
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264 Electronic Circuit Analysis I m
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270 Electronic Circuit Analysis Xc
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282 Electronic Circuit Analysis Rec
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284 - Electronic Circuit Analysis S
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288 Electronic Circuit Analysis 50
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292 Eleetronic Circuit Analysis 2.
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296 Electronic Circuit Analysis 1.
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APPENDIX-l Colour Codes for Electro
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APPENDIX 301 --=>- ~ / x W --9JE)-
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APPENDIX 303 Typical Standard Resis
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APPENDIX-3 Capacitors Capacitance T
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APPENDIX 30', Paper capacitors are
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APPENDIX 309 Foil Electrolyte soake
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APPENDIX-4 Inductors Magnetic Flux
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APPENDIX 313 J\ II II 1/ II II II (
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APPENOIX-5 Miscellaneous Ionic Bond
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APPENDIX 317 Porcelain coating wire
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APPENDIX 319 More Resistors 14 pin
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APPENDIX 321 The right-hand rule fo
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APPENDIX 323 -- Flux N (a) Single-t
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APPENDIX-6 Circuit Symbols 1 1 - 1
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APPENDIX-7 Unit Conversion Factors
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APPENDIX 329 Velocity Units mileslh
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APPENDIX 331 19 0.912 26.3 35.9 8.0
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Index Amplifiers 2, 21, 31 A common
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Electronic Circuit Analysis

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