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ANNA UNIVERSITY 1ST,3RD,5TH,7TH SEMESTER SYLLABUS 2008 REGULATION

EC 2205 ELECTRONIC CIRCUITS I EC2205 ELECTRONIC CIRCUITS I

EC 2205                                  ELECTRONIC CIRCUITS I SYLLABUS                                3  1  0  4

AIM
The aim of this course is to familiarize the student with the analysis and design of basic transistor Amplifier circuits and power supplies.

OBJECTIVE
On completion of this course the student will understand
·         The methods of biasing transistors
·         Design of simple amplifier circuits
·         Midband analysis of amplifier circuits using small - signal equivalent circuits to determine gain input impedance and output impedance
·         Method of calculating cutoff frequencies and to determine bandwidth
·         Design of power amplifiers
·         Analysis and design of power supplies.

UNIT I   TRANSISTOR BIAS STABILITY                                                                         9
BJT – Need for biasing – Stability factor - Fixed bias circuit, Load line and quiescent point. Variation of quiescent  point due to  variation within manufacturers tolerance - Stability factors - Different types of biasing circuits - Method of stabilizing the Q point - Advantage of Self bias (voltage divider bias) over other types of biasing, Bias compensation – Diode, Thermister and Sensistor compensations, Biasing the FET and MOSFET.

UNIT II   MIDBAND ANALYSIS OF SMALL SIGNAL AMPLIFIERS                                9
CE, CB and CC amplifiers - Method of drawing small-signal equivalent circuit - Midband analysis of various types of single stage amplifiers to obtain gain, input impedance and output impedance - Miller’s theorem - Comparison of CB, CE and CC amplifiers and their uses - Methods of increasing input impedance using Darlington connection and bootstrapping - CS, CG and CD (FET) amplifiers - Multistage amplifiers.
Basic emitter coupled differential amplifier circuit - Bisection theorem. Differential gain – CMRR - Use of constant current circuit to improve CMRR - Derivation of transfer characteristic.

UNIT III    FREQUENCY RESPONSE OF AMPLIFIERS                                                9

General shape of frequency response of amplifiers - Definition of cutoff frequencies and bandwidth - Low frequency analysis of amplifiers to obtain lower cutoff frequency Hybrid –  equivalent circuit of BJTs - High frequency analysis of BJT amplifiers to obtain upper cutoff frequency – Gain Bandwidth Product - High frequency equivalent circuit of FETs - High frequency analysis of FET amplifiers - Gain-bandwidth product of FETs - General expression for frequency response of multistage amplifiers -  Calculation of overall upper and lower cutoff frequencies of multistage amplifiers -  Amplifier rise time and sag and  their relation to cutoff frequencies.

UNIT IV    LARGE SIGNAL AMPLIFIERS                                                                        9
Classification of amplifiers, Class A large signal amplifiers, second harmonic distortion, higher order harmonic distortion, transformer-coupled class A audio power amplifier – efficiency of Class A amplifiers. Class B amplifier – efficiency - push-pull amplifier -  distortion in amplifiers - complementary-symmetry (Class B) push-pull amplifier, Class C, Class D amplifier – Class S amplifier – MOSFET power amplifier, Thermal stability and heat sink.

UNIT V    RECTIFIERS AND POWER SUPPLIES                                                          9
Classification of power supplies, Rectifiers - Half-wave, full-wave and bridge rectifiers with resistive load. Analysis for  and ripple voltage with C, L, LC and CLC filters. Voltage multipliers, Voltage regulators - Zener diode regulator, principles of obtaining a regulated power supply, regulator with current limiting, Over voltage protection, Switched mode power supply (SMPS),  Power control using SCR.

TUTORIAL = 15                                                                                 TOTAL : 60

TEXT BOOKS
1.      Millman J and Halkias .C., Integrated Electronics, TMH, 2007.
2.      S. Salivahanan, N. Suresh Kumar and A. Vallavaraj, Electronic Devices and Circuits, 2nd Edition, TMH, 2007.

REFERENCES
1.      Robert L. Boylestad and Louis Nashelsky, Electronic Devices and Circuit Theory, 9th Edition, Pearson Education / PHI, 2007.
2.      David A. Bell, Electronic Devices & Circuits, 4th Ediion, PHI, 2007
3.      Floyd, Electronic Devices, Sixth Edition, Pearson Education, 2002.
4.      I.J. Nagrath, Electronic Devices and Circuits, PHI, 2007.
5.      Anwar A. Khan and Kanchan K. Dey, A First Course on Electronics, PHI, 2006.
6.      B.P. Singh and Rekha Singh, Electronic Devices and Integrated Circuits, Pearson Education, 2006.
Rashid M, Microelectronics Circuits, Thomson Learning, 2007

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