Electronic Circuit Analysis Pdf Notes – ECA Pdf | Free Lecture Notes download


Here you can download the free lecture Notes of Electronic Circuit Analysis Pdf Notes – ECA Pdf Notes materials with multiple file links to download. The Electronic Circuit Analysis Notes Pdf- ECA Notes Pdf book starts with the topics covering Classification of amplifiers, Analysis of Cascaded RC coupled BJT amplifiers Cascode amplifier, General frequency considerations, MOS small signal model, classification of feedback on amplifier characteristics, Classification of oscillators, Class A Large Signal Amplifiers, Q-Factor, Etc.

Electronic Circuit Analysis Pdf Notes – ECA Pdf Notes

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Complete Notes

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Unit 1

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Unit 2

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Unit 3

Link – Unit 3 Notes

Unit 4

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Unit 5

Link – Unit 5 Notes

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Classification of amplifiers- distrotion in amplifiers, analysis of CE, CC and CB configurations with simplified hybrid model, analysis of CE amplifier with emitter resistance and emitter follower, Miller’s Theorem and its dual, Design of Single stage RC coupled amplifier using BJT.

Download ECA Unit – 1



Analysis of Cascaded RC coupled BJT amplifiers Cascode amplifier, Darlington Pair, Different Coupling Schemes used in amplifiers- RC Coupled Amplifier, Transformer Coupled amplifier, Direct Coupled amplifier.

Download ECA Unit – 2



Logarithms, Decibles, General frequency considerations, Frequency response of BJT amplifiers, Analysis at Low and High Frequencies, Effect of coupling and bypass capacitors. The hybrid pi – common emitter transistor model, CE short circuit current gain, Current gain with resistive load, single stage CE transistor amplifier response, gain-bandwidth poduct, emitter follower at higher frequencies.

Download ECA Unit –  3



Basic concepts, MOS small signal model, common source amplifier with resistive load, diode connected load and current source load, source follower, common gate stage cascode, folded cascode amplifier, and their frequency response.

Download ECA Unit –  4

Electronic Circuit Analysis Notes Pdf- ECA Notes Pdf



Concepts of feedback, classification of feedback on amplifier characteristics, general characterstics of negative feedback amplifiers, effect of feedback on amplifier characteristics, voltage seriesm voltage shunt, current series and current shunt feedback cofigurations, Illustrative problems.

Download ECA Unit –  5



Classification of oscillators, conditions for oscillatorsm RC Phase shift oscillator , Generalized analysis of LC oscillator- Hartley and colpitts Oscillators, Wein Bridge & Crystal Oscillator, Stability of Oscillators.



Classification, Class A Large Signal Amplifiers, Transformer coupled class A Audio power amplifierm Efficiency of Class A Amplifier, Class B Amplifier, Efficiency of CLass b Amplifier, Class B Pushpull amplifier, Complimentary symmetry Class B Push-Pull amplifier, Distortion in Power Amplifiers, Thermal Stability and Heat sinks.



Introduction, Q- Factor , small signal tuned amplifier, effect of cascading single tuned amplifiers on bandwidth, effect of cascading double tuned amplifiers on bandwidth, stagger tuned amplifiermm stability of tuned amplifiers.


  1. integrated electronics – Jacob Millman and Christos C Halkias, 1991 ed 2008, TMH
  2. Electronic Devices and Circuits – S Shalivahan
  3. Design of Analog CMOS Integrated Circuits – Behzad Razavi 2008 TMH

Note :- These notes are according to the r09 Syllabus book of JNTUH.In R13 ,8-units of R09 syllabus are combined into 5-units in r13 syllabus.Click here to check all the JNTU Syllabus books 

Frequently Asked Questions

Q1: What is an electronic amplifier circuit?

A1: Electronic amplifier circuit modifies the characteristics of the input signal when delivered the output side. It can be with respect to current, voltage, or power.

Q2: What are the classification of amplifier?

A2: Classification of amplifiers is given below

Type of signal Type of configuration Classification Frequency of operation Type of coupling Based on the output Number of stages
Small signal Common emitter Class A Amplifier Direct Current (DC) A RC coupled  amplifiers A Voltage amplifier A Single stage amplifiers
Large signal Common base Class B Amplifier Audio Frequencies Inductive coupled amplifiers Power amplifiers Two stage amplifier
Common collector Class AB Amplifier Radio frequencies Transformer coupled amplifiers Multistage amplifiers
Class C Amplifier VHF, UHF, SHF frequencies Direct coupled amplifiers Number of stages

Q3: What are the characteristics of amplifiers?

A3: Characteristics of amplifier are,

  • Current gain
  • Voltage gain
  • Power gain
  • Input impedance
  • Output impedance
  • Band width

Q4: What is the difference between CE, CB, CC amplifier?

A4: The difference between CE, CB, CC amplifier are,

Characteristic CE CB CC
Input resistance Low (1K to 2K) Very low (30-150 Ω) High (20-500 KΩ)
Output resistance Large (≈ 50 K) High (≈ 500 K) Low (50-1000 KΩ)
Current gain B high α < 1 High (1 + β)
Voltage gain High (≈ 1500) High (≈ 1500) Less than one
Power gain High (≈ 10,000) High (≈ 7500) Low (250-500)
Phase between input and output reversed same same

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  1. its very very goood website tqqqqqqqqq very much

  2. Where s the download link for 6th unit..I want oscillators unit..

  3. There is no download link for 6,7,8 units of ECA notes Sir.

  4. It was very helpful. Thanks a lot

  5. Pranathi ayyalaraj

    Sir…thnkq so much for the notes….your notes really helped me a lot to get passed in the exams….and i also want the notes for the 6th 7th 8th units!! So… please upload it as soon as possible sir..! Thankq sir!

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