PREVIOUS YEAR QUESTION PAPERS DOWNLOAD
CLICK THE BELOW CLICKS TO DOWNLOAD
NOV/DEC 2012 CLICK HERE
APRIL/MAY 2012 LINK WILL BE UPDATED SOON(check later for updates)
NOV/DEC 2011 CLICK HERE
APRIL/MAY 2011 CLICK HERE
NOV/DEC 2010 LINK WILL BE UPDATED SOON(check later for updates)
APRIL/MAY 2010 CLICK HERE
NOV/DEC 2009 CLICK HERE
BJT – Need for biasing – Stability factor - Fixed bias circuit, Load line and quiescent point. Variation of quiescent point due to hFE 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 12
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 12
General shape of frequency response of amplifiers - Definition of cutoff frequencies and bandwidth - Low frequency analysis of amplifiers to obtain lower cutoff frequency Hybrid
– p 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 12
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 12
Classification of power supplies, Rectifiers - Half-wave, full-wave and bridge rectifiers
with resistive load. Analysis for Vdc 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 PERIODS 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.
APRIL/MAY 2012 LINK WILL BE UPDATED SOON(check later for updates)
NOV/DEC 2011 CLICK HERE
APRIL/MAY 2011 CLICK HERE
NOV/DEC 2010 LINK WILL BE UPDATED SOON(check later for updates)
APRIL/MAY 2010 CLICK HERE
NOV/DEC 2009 CLICK HERE
EC 2205 ELECTRONIC CIRCUITS I L T P C
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 gaininput impedance and output impedance
· Method of calculating cutoff freqer supplies.
uencies and to determine bandwidth
· Design of power amplifiers
· Analysis and design of pow
UNIT I TRANSISTOR BIAS STABILITY 12
BJT – Need for biasing – Stability factor - Fixed bias circuit, Load line and quiescent point. Variation of quiescent point due to hFE 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 12
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 12
General shape of frequency response of amplifiers - Definition of cutoff frequencies and bandwidth - Low frequency analysis of amplifiers to obtain lower cutoff frequency Hybrid
– p 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 12
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 12
Classification of power supplies, Rectifiers - Half-wave, full-wave and bridge rectifiers
with resistive load. Analysis for Vdc 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 PERIODS 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.
