Sub Code & Name: EC2251- ELECTRONIC CIRCUITS II Unit : I Branch : ECE Year:II
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1 Unit : I Branch : ECE Year:II Page 01 of 06 UNIT 1 FEEDBACK AMPLIFIERS 9 Block diagram, Loop gain, Gain with feedback, Effects of negative feedback Sensitivity and desensitivity of gain, Cut-off frequencies, distortion, noise, input impedance and output impedance with feedback, Four types of negative feedback connections voltage series feedback, voltage shunt feedback, current series feedback and current shunt feedback, of identifying feedback topology and feedback factor, Nyquist criterion for stability of feedback amplifiers. The aim of this course is to familiarize the student with the analysis and design of feed back amplifiers. 1. Overview of subject & syllabus. 50 1,2,7 BB 2. Types of basic amplifiers-voltage amplifier, Current 50 1,2,7 BB amplifier, Trans resistance amplifier &Transconductance amplifier. 3. Block diagram of positive and negative feedback 50 1,2,7 BB Loop gain. Gain with feedback. 4. Sensitivity and Desensitivity of gain 50 1,2,7 BB 5. Effect of Input resistances with feedback. 50 1,2,7 BB 6. Effect of Output resistances with feedback. 50 1,2,7 BB 7. Distortion, noise and cut off frequencies with feedback. 50 1,2,7 BB 8. Four basic feedback topologies and the type of gain 50 1,2,7 BB stabilized by each type of feedback.. of identifying feedback topology & Feedback factor. 9. Analysis of voltage series feedback amplifier. 50 1,2,7 BB 10. Analysis of current shunt feedback amplifier. 50 1,2,7 BB 11. Analysis of voltage shunt feedback amplifier. 50 1,2,7 BB 12. Analysis of current series feedback amplifier. 50 1,2,7 BB 13. Nyquist criterion for stability of feedback amplifiers. 50 1,2,7 BB
2 SubCode & Name: EC2251- ELECTRONIC CIRCUITS II Unit : II Branch : ECE Year:II Page 02 of 06 UNIT II OSCILLATORS 9 Classification, Barkhausen Criterion - Mechanism for start of oscillation and stabilization of amplitude, General form of an Oscillator, Analysis of LC oscillators - Hartley, Colpitts, Clapp, Franklin, Armstrong, Tuned collector oscillators, RC oscillators - phase shift Wienbridge - Twin- T Oscillators, Frequency range of RC and LC Oscillators, Quartz Crystal Construction, Electrical equivalent circuit of Crystal, Miller and Pierce Crystal oscillators, frequency stability of oscillators. The aim of this course is to familiarize the student with the analysis and design of oscillators. 14. Classifications of oscillator, Mechanism for start of 50 1,2,6,7 BB oscillation and stabilization of amplitude and Barkhausen Criterion & General form of an oscillator. 15. Analysis of Oscillator using Cascade connection of RC 50 1,2,6,7 BB filters, RC phase shift Oscillator. 16. Wien bridge Oscillator. 50 1,2,6,7 BB 17. Analysis of twin-t Oscillators. 50 1,2,6,7 BB 18. Analysis of LC Oscillators- Hartley oscillator. 50 1,2,6,7 BB 19. Colpitts and Clapp oscillator. 50 1,2,6,7 BB 20. Franklin and Armstrong oscillator. 50 1,2,6,7 BB 21. Tuned collector oscillators Frequency range of RC and 50 1,2,6,7 BB LC Oscillators. 22. Quartz Crystal Construction. Electrical equivalent circuit 50 1,2,6,7 BB of Crystal. Crystal Oscillator circuits. 23. Miller and Pierce Crystal oscillators, frequency stability 50 1,2,6,7 BB of oscillators. 24. Problems. 50 1,2,6,7 BB
3 Unit : III Branch : ECE Year:II Page 03 of 06 UNIT III TUNED AMPLIFIERS 9 Coil losses, unloaded and loaded Q of tank circuits, small signal tuned amplifiers Analysis of capacitor coupled single tuned amplifier double tuned amplifier effect of cascading single tuned and double tuned amplifiers on bandwidth Stagger tuned amplifiers large signal tuned amplifiers Class C tuned amplifier Efficiency and applications of Class C tuned amplifier Stability of tuned amplifiers Neutralization Hazeltine neutralization method. The aim of this course is to familiarize the student with the analysis and design of tuned amplifiers. 25. Coil losses and operation of tank circuits. 50 1,4,6,7 BB 26. Unloaded and loaded Q of tank circuits. 50 1,4,6,7 BB 27. Analysis of small signal tuned amplifiers. 50 1,4,6,7 BB 28. Analysis of capacitor coupled single tuned 50 1,4,6,7 BB amplifier double tuned amplifier. 29. Effect of cascading single tuned and double tuned 50 1,4,6,7 BB amplifiers on bandwidth. 30. Stagger tuned amplifiers large signal tuned 50 1,4,6,7 BB amplifiers. 31. Stability of tuned amplifiers Neutralization 50 1,4,6,7 BB Hazeltine neutralization method. 32. Class C tuned amplifiers and their applications. 50 1,4,6,7 BB Efficiency of Class C tuned Amplifier. 33. Problems. 50 1,4,6,7 BB CAT I 180
4 Unit : IV Branch : ECE Year:II Page 04 of 06 UNIT IV-WAVE SHAPING AND MULTIVIBRATOR CIRCUITS 9 RC & RL Integrator and Differentiator circuits Storage, Delay and Calculation of Transistor Switching Times Speed-up Capacitor - Diode clippers, Diode comparator - Clampers. Collector coupled and Emitter coupled Astable multivibrator - Monostable multivibrator - Bistable multivibrators - Triggering methods for Bistable multivibrators - Schmitt trigger circuit. The aim of this course is to familiarize the student with the analysis and design of wave shaping circuits and multivibrators. 34. RC Integrator circuit, RC Differentiator circuits. 50 2,3 BB 35. RL Integrator circuits, RL Differentiator circuits. 50 2,3 BB Storage, Delay and Calculation of Transistor Switching Times. 36. Diode clippers-positive and negative clippers. 50 2,3 BB 37. Positive and negative Clampers and slicers. 50 2,3 BB 38. Fixed biased bistable multivibrators. 50 2,3 BB 39. Self biased bistable multivibrators. 50 2,3 BB 40. Collector coupled and Emitter coupled 50 2,3 BB Monostable multivibrator. Storage delay and calculation of switching times. 41. Collector coupled and Emitter coupled Astable 50 2,3 BB multivibrator. Storage delay and calculation of switching times. 42. Triggering methods Speed up capacitors. 50 2,3 BB 43. Schmitt trigger circuit. 50 2,3 BB CAT-II
5 Page 05 of 06 UNIT V BLOCKING OSCILLATORS AND TIMEBASE GENERATORS 9 UJT saw tooth waveform generator, Pulse transformers equivalent circuit response - applications, Blocking Oscillator Free running blocking oscillator - Astable Blocking Oscillators with base timing Push-pull Astable blocking oscillator with emitter timing, Frequency control using core saturation, Triggered blocking oscillator Monostable blocking oscillator with base timing Monostable blocking oscillator with emitter timing, Time base circuits - Voltage-Time base circuit, Current-Time base circuit - Linearization through adjustment of driving waveform. Unit : V Branch : ECE Year:II The aim of this course is to familiarize the student with the analysis and design of feed back amplifiers, oscillators, tuned amplifiers, wave shaping circuits, multivibrators and blocking oscillators. 44. Pulse transformers equivalent circuit response 50 1,2,3,4,7 BB applications. 45. Free running blocking oscillator, Astable Blocking 50 1,2,3,4,7 BB Oscillators with base timing. 46. Monostable Blocking Oscillators using Emitter and 50 1,2,3,4,7 BB base timing. 47. Frequency control using core saturation. Triggered 50 1,2,3,4,7 BB blocking oscillator. 48. Pushpull operation of Astable blocking oscillator with 50 1,2,3,4,7 BB emitter timing. 49. Frequency control using core saturation, Triggered 50 1,2,3,4,7 BB blocking oscillator. 50. UJT sawtooth generators. 50 1,2,3,4,7 BB 51. Linearization through adjustment of driving waveform. 50 1,2,3,4,7 BB 52. Time base circuits - Voltage-Time base circuit, Current-Time base circuit. 50 1,2,3,4,7 BB
6 Unit : I-V Branch : ECE Year:II Page 06 of 06 Course Delivery Plan: Week I II I II I II I II I II I II I II I II I II I II I II I II I II UNIT TEST - T1 - T2 - T3 - CAT-I - T4 CAT-II - T5 TEXT BOOKS: 1) Sedra / Smith, Micro Electronic Circuits Oxford University Press, ) S. Salivahanan, N. Suresh Kumar and A. Vallavaraj, Electronic Devices and Circuits, 2 nd Edition, TMH, REFERENCES: 3) Millman J. and Taub H., Pulse Digital and Switching Waveforms, TMH, ) Schilling and Belove, Electronic Circuits, 3 rd Edition, TMH, ) Robert L. Boylestad and Louis Nasheresky, Electronic Devices and Circuit Theory, 9 th Edition, Pearson Education / PHI, ) David A. Bell, Solid State Pulse Circuits, Prentice Hall of India, ) Millman and Halkias. C., Integrated Electronics, TMH, Prepared by Approved by Signature Name Ms. S.M.Mehzabeen / Dr.S.Ganesh Vaidyanathan Mr.M.Athappan /Ms R.Gayathri Designation AP /AP /AP HOD, Department of EC Date 30/12/ /12/2013
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