Electronic Circuit Analysis

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Tuned Amplifiers - I 201' in this circuit, the voltage developed across the tuned circuit is inductively coupled to the next stage. Coil L, of the tuned circuit, and the inductor coupling the voltage to the II stage, L2 form' a transformer with mutual coupling M. This type of circuit is also used, where the input IZI of the II stage is smaller or different from the tuned circuit. SO IZI matching is done by the transformer depending on its tum ratio. In such requirements, this type of circuit is used. The resistors R I , R2 and R; and R2 are the biasing resistors. The parallel tuned circuit, Land C resonates at the frequency of operation. Fig. (b) shows output equivalent circuit. Input equivalent circuit will be the same as that of the capacitive coupled circuit. In the output equivalent circuit, C is the total capacitance, including the stray capacitance, Miller equivalent capacitance C ( A ~ 1 ). L2 and R2 are the inductance and resistance of the secondary winding. 5.4.1 Expression for Ll for Maximum Power Transformer Writing KVL to the primary and secondary windings, V = II Zll + 12 Z12 .....(1) ro 2 M2 Zin::: (R + jroL) + -- .....(9) R. 1 o = II Z21 + 12 Z22 .....(2) where ZII = R + jroL ZI2 = Z21 = jroM Z22 = R2 + Rj + jroL2 .....(3) .....(4) .....(5) Solving eqs. (1) and (2) for II' V,Z22 1 = --~=--::-- I 2 ZII Z22 -Z12 .....(6) The impedance seen looking into the primary is, 2 V Zl1 Z22 - Z12 Zjn = 11 Z22 2 Z12 = Zll --- .....(7) Z22 Substituting the values of Zll' Z22 and ZI2 in equation (7) we get, ro 2 M2 Zjn = (R + jroL) + R R . L 2 + i + Jro 2 .....(8) R j generally much greater than R2 and roL 2 .
202 Electronic Circuit Analysis L c Fig. 5.12 Equivalent circuit (02 M2 --- is the impedance of the secondary side reflected to the primary. R. I (02 M2 IfM is reasonably large, then R« -- R. 1 (02 M2 Zin :::: j(OL + -- R. I ...... (10) The equivalent circuit may be written as, Inductance L with series resistance (02M2 R. 1 may be represented as L in shunt with Rio as shown below, where ..... (11) c L R Ip ..... (12) Fig. 5.13 Simplified circuit For maximum transfer of power at resonance, Rip = Ro Ro= (~r·Ri Equation 12. gives the value of M for maximum power transfer.
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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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xvi C x rx AVI All B.W Ie A=J; IH=
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Brief History of Electronics In sci
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xxi 1975: MSI (Multiplenum, Address
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UNIT - 1 Single Stage Amplifiers In
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Single Stage Amplifzers 3 (d) Type
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Single Stage Amplifiers Ie is in rn
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Single Stage Amplifiers 7 1.3.3 Cur
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Single Stage Amplifiers 9 1.4 Commo
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Single Stage Amplifiers 11 ~ The va
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Single Stage Amplifiers 13 The h-pa
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Single Stage Amplifiers 15 1.5.1 In
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Single Stage Amplifiers 17 Example
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Single Stage Amplifiers 19 ~ is the
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Single Stage Amplifiers 21 1.6 JFET
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Single Stage Amplifiers 23 The pric
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Single Stage Amplifiers 25 But rd»
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Single Stage Amplifiers 27 1. 7 Com
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Single Stage Amplifiers 29 1.9 Gain
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Single Stage Amplifiers 31 1. Write
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UNIT - 2 Multistage Amplifiers In t
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Multistage Amplifiers 35 2.1.5 Band
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Multistage Amplifiers 37 I stage: F
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Multistage Amplifrers 39 The equiva
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Multistage Amplifiers 41 Solution:
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Multistage Amplifiers 43 Example :
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Multistage Amplifiers 45 But Output
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Multistage Amplifiers 47 or ! If;;
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Multistage Amplifiers 49 2.2.5 Midb
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Multistage Amplifiers 51 2.2.8 Phas
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Multistage Amplifiers 53 R in = Rl
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Multistage Amplifiers 55 If for a g
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Multistage Amplifiers 57 2.5 Freque
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Multistage Amplifiers 59 2.6 Amplif
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Multistage Amplifiers 61 Ordinary G
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Multistage A'mpiifzers 63 !c = 1 e
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Multistage Amplifiers 65 When,f cha
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Multistage Amplifiers 67 Substituti
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Multistage Amplifiers 69 2.7.4 Outp
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Multistage Amplifiers 71 I' can be
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Multistage Amplifiers 73 The circui
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Multistage Amplifiers 75 Therefore,
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Multistage Amplifiers 77 2.9 CE - C
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Multistage Amplifiers 79 where Ad i
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Multistage Amplifiers 81 + vee BI B
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Multistage Amplifiers 83 8 pins. In
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Multistage Amplifiers 85 23. Compar
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Multistage Amplifiers 87 1. (a) R-C
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UNIT - 3 High Frequency Transistor
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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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Page 190 and 191: Power Amplifiers Po is maximum 2 VC
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Page 200 and 201: Power Amplifiers 177 12V 0.8: 1 110
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Page 206 and 207: Power Amplifzers 183 I. Amplifiers
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Page 210: Power Amplifiers 187 23. TD = ~D; +
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Voltage Regulators 251 1. The stabi
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Voltage Regulators 253 4. Sampling
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256 Electronic Circuit Analysis 8.1
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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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272 Electronic Circuit Analysis Exa
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274 Electronic Circuit Analysis ,.2
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276 Electronic Circuit Analysis Not
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278 Electronic Circuit Analysjs The
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280 Electronic Circuit Analysis Exa
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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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