Electronic Circuit Analysis

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Switching and Ie Voltage Regulators 271 Example: 8.4 A full wave rectifier with LC filter is to supply 250 v at 100 m.a. DC. Determine the ratings of the needed diodes and transformer, the value of the bleeder resistor and the ripple, if ~ of the choke = 400(2. L = 10 Hand C = 20 IlF. Solution: V DC I DC R =- L For the choke input resistor, 250V RL =:: o.I = 2,500n. and . 1tE [ R 1 E =~ I+~ m 2 R L _ 1tX250(1+ 400) _ - 2 2500 - 455V 455 E = - =322 V rms .fi Therefore, the transformer should supply 322V rms on each side of the centre tap. This includes no allowance for transformer impedance, so that the transformer should be rated at about 340 volts 100 rnA, DC. The Bleeder Resistance 3X L R = B 2 L= 10H 2E 2x455 I = __ In_=:: B 31troL 31t x 377 x 10 = 0.256 A Ripple factor 0.47 0.47 Y = 4ro2LC-I = 4x377 2 x20xI0- 6 The current ratings of each diode = 0.00413, should be 50 rnA.
272 Electronic Circuit Analysis Example: 8.S Design a full wave rectifier to supply current in the range 50 rnA to 100 rnA at 300V with a ripple less than 5V, using, 1. L section filter 2. 1t - section filter 3. C filter L Load IOOmN300V (75 ±25) Fig. 8.24 Circuit for Ex. 8.5 IL(min) = 50 rnA and IL(min) = 100 rnA 5V lac r=-=- 300 Idc Vac 1.1931 = V dc =----r:c- .. LC = 35.8, where L is in henrys and C in ~F. LeritIcal2: RL (:.minimum value of IL = 50 rnA, we use RB for 50 rnA only) 2ro s V 300 R == - = =6KQ B I 50xl0- 3 L 6K Leritieal = 3 X 21t X 50 = 6.4H Taking 25% more, because for formula of Leritieal' we use fundamental frequency value, .. We choose We choose Now, Leritieal = 8 H L = 10 H/I00 rnA C = 3.58 ~F from the equation, 4~F/450 V _ 2V m V de - -- - Ide R, where 1t
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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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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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194 Electronic Circuit Analysis Let
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196 Electronic Circuit Analysis Mag
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198 Electronic Circuit Analysis M =
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200 Electronic Circuit Analysis Exp
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202 Electronic Circuit Analysis L c
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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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208 Electronic Circuit Analysis Mag
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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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Page 264 and 265: Voltage Regulators 241 I. The nomin
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Page 323 and 324: APPENDIX-l Colour Codes for Electro
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Page 339 and 340: APPENOIX-5 Miscellaneous Ionic Bond
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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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