ECA: COURSE MATERIAL

ELECTRONIC CIRCUIT ANALYSIS

SYLLABUS:

OBJECTIVE

 To familiarize the student with the analysis and design of basic transistor amplifier circuits and their frequency response characteristics, feedback amplifiers, oscillators, large signal amplifiers and tuned amplifiers

 To demonstrate basic understanding of amplifier operation.

 To analyze amplifier circuits using hybrid model.

UNIT - I SINGLE STAGE AMPLIFIERS: Classification of amplifiers, Transistor hybrid model, Analysis of a transistor CE, CB & CC amplifier circuit using simplified h-parameters, Analysis of CE amplifier with emitter resistance and emitter follower. Design of single stage RC coupled amplifier using BJT MULTISTAGE AMPLIFIERS: Distortion in amplifiers, Analysis of cascaded RC coupled BJT amplifier, cascode amplifier, Darlington pair, Coupling schemes-RC coupled amplifier, transformer coupled amplifier, Direct coupled Amplifier, multistage amplifier using JFET

UNIT – II BJT Amplifiers- Frequency Response: Logarithms, Decibels, general frequency considerations, Frequency response of an amplifier Analysis at low and High Frequencies, Hybrid-pi (π) common emitter transistor model, hybrid - π conductances and capacitances, validity of hybrid- π model, variation of hybrid – π parameters, Millers theorem and its dual, the CE short circuit current gain, current gain with resistive load, gain-bandwidth product, emitter follower at high frequencies.

UNIT - III FEEDBACK AMPLIFIERS: Concept of Feedback and types, transfer gain with feedback, general characteristics of negative feedback amplifiers, Effect of negative feedback on amplifiers characteristics, voltage series, current series, current shunt, and voltage shunt feedback amplifiers.

OSCILLATORS: Classification of oscillators, Constituents of an oscillator, Barkhausen criterion, RC phase shift oscillator, Wein-bridge oscillator, Generalized analysis of LC oscillators- Hartley and Colpitts oscillator, Crystal oscillator ,Stability of oscillator, Wein bridge oscillator, Crystal oscillator, frequency stability.UJT relaxation oscillator.

UNIT - IV LARGE SIGNAL AMPLIFIERS: Classification, Distortion in amplifiers, class A large signal amplifiers, transformer coupled class A power amplifier, efficiency of class A amplifier, class B power amplifier, efficiency of class B amplifier, class B push pull amplifier

Complementary symmetry class B push pull amplifiers, class AB push pull amplifier, class C amplifiers, class D amplifier, thermal stability, heat sink.

UNIT - V TUNED AMPLIFIERS: Introduction, classification of tuned amplifiers, small signal tuned amplifier, Effect of cascading single tuned amplifier on bandwidth, Effect of cascading Double tuned amplifier on bandwidth, Staggered tuned amplifier, stability of Tuned Amplifier

TEXT BOOKS: 

1. Integrated Electronics-Jacob Millman and Christos C. Halkias,1991 Ed -2008,TMH.

 2. Electronic Devices and Circuits, B.P Singh, Rekha Singh,Pearson, 2013.

REFERENCE BOOKS:

1. Electronic Circuit Analysis- Rashid, Cengage Lerning, 2013.

2. Electronic Devices and Circuit Theory-Robert L. Boylestad, Louis Nashelsky, 9Ed,2008 PE.

3. Microelectric Circuits-Sedra and Smith-5 Ed., 2009, Oxford University press.

4. Electronic Circuit Analysis-K.LalKishore, 2004, BSP.

5. Electronic Devices and Circuits-S.Salivahanan ,N.Suresh Kumar,A Vallavaraj,2Ed.,2009, TMH.

OUTCOMES

 Design and analyze the DC bias circuitry of BJT and FET.

 Analyze the different types of amplifiers, operation and its characteristics

 Design circuits like amplifiers, oscillators using the transistors diodes and oscillators

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