Are these Analog Electronic Circuits handwritten notes free?

Yes. Fill in the short form on this page and the PDF downloads right away. There is no fee for the notes.

Are these official university notes?

No. These are original Uncodemy revision notes for Analog Electronic Circuits. They are not issued or approved by AKTU or any other university, and they are not past papers.

Which syllabus do they follow?

They follow the common B.Tech syllabus for Analog Electronic Circuits used by most Indian universities, including AKTU and colleges on the AICTE model curriculum. Unit order and depth differ, so match the notes with your own university syllabus.

Do the notes include op-amp and 555 timer circuits?

Yes. There is a full unit on the operational amplifier, covering ideal and non-ideal behaviour and common circuits, and a short unit on the 555 timer.

Is this the same as Electronic Devices?

No. Electronic Devices covers semiconductor physics, diodes and transistor operation. Analog Electronic Circuits uses those devices to build rectifiers, amplifiers and oscillators.

Analog Electronic Circuits Handwritten Notes PDF

Key takeaways

Nine units, from rectifiers and clippers to op-amps and the 555 timer.
BJT biasing, Q-point and stability factor are worked through with a voltage divider example.
All four feedback topologies and their effect on input and output resistance are compared.
Op-amp circuits, slew rate and CMRR are covered with a solved numerical.
Original Uncodemy revision notes, not official university notes. Check your own syllabus.

About these handwritten notes

These Analog Electronic Circuits notes are original Uncodemy revision notes, written in a clean handwritten style so they are quick to read before an exam. They follow the common B.Tech syllabus for Analog Electronic Circuits (B.Tech ECE and EEE, and GATE EC basics). They are not official university notes and not copied from any textbook or past paper.

Topic order, unit numbers and depth vary between universities, so first place each unit below against your own university syllabus. If your syllabus has a topic that is missing here, add it in the margin from your class notes or textbook. Use these notes for revision after you have studied the topic once in class, not as your only study material. They are short on purpose: the aim is to help you recall the main ideas, formulas and diagrams quickly, so that your exam time goes into writing good answers.

What's inside the Analog Electronic Circuits notes

The notes move from simple diode circuits to transistor amplifiers and then to op-amps. Each unit has a circuit sketch, key equations and a short exam tip.

Unit 1: Diode Circuits. Half-wave and full-wave rectifiers with ripple factor and efficiency, plus clippers and clampers.
Unit 2: BJT Biasing. Fixed, collector-to-base and voltage divider bias, Q-point, load line and stability factor.
Unit 3: Small-Signal Models and BJT Amplifiers. h-parameter and re models, CE, CB and CC comparison, and FET amplifiers.
Unit 4: Frequency Response and Multistage Amplifiers. Lower and upper cut-off frequencies, Miller effect and cascaded stages.
Unit 5: Feedback Amplifiers. Negative feedback, desensitivity and the four topologies with their effect on Rin and Rout.
Unit 6: Oscillators. Barkhausen criterion, RC phase shift, Wien bridge, Hartley, Colpitts and crystal oscillators.
Unit 7: Power Amplifiers. Class A, B, AB and C, efficiency and crossover distortion.
Unit 8: Operational Amplifier. Ideal op-amp, inverting and non-inverting amplifiers, integrator, differentiator, non-ideal parameters and other op-amp circuits.
Unit 9: 555 Timer (basics). Astable and monostable modes and their timing formulas.

The last page of the PDF lists the most asked practice questions for the whole subject, so you can test yourself after finishing all the units.

Formulas and solved examples in the PDF

Formula boxes cover rectifier Vdc and ripple factor, closed-loop gain with feedback, oscillator frequency conditions and op-amp gain expressions. Solved examples include a voltage divider bias Q-point, a feedback numerical showing how Af = A/(1 + Aβ) reduces the effect of a change in A, and an op-amp circuit numerical.

How to revise Analog Electronic Circuits with handwritten notes

Handwritten-style notes work best when you read actively. Keep a pen and a rough notebook beside you, cover the formula or diagram, and try to write it yourself before you look.

Redraw each circuit before you write its formula. In this subject the diagram usually carries part of the marks.
For biasing, practise finding the Q-point step by step: Thevenin equivalent of the base, then IB, IC and VCE.
Make one comparison table for CE, CB and CC, and one for class A, B, AB and C amplifiers.
For op-amps, use the virtual short idea every time and write the gain in one line before solving.

In the last week, read only the formula boxes and exam tips, and solve one numerical or long question per unit from memory. If you study with friends, ask each other to explain one diagram or derivation aloud. Explaining a topic is the fastest way to find the gaps in it.

A short revision plan

If your exam is about a week away, this plan covers every unit in the PDF once and leaves time for practice. Stretch it over two weeks if you are starting from scratch.

Day 1: Diode Circuits, BJT Biasing.
Day 2: Small-Signal Models and BJT Amplifiers, Frequency Response and Multistage Amplifiers.
Day 3: Feedback Amplifiers, Oscillators.
Day 4: Power Amplifiers, Operational Amplifier.
Day 5: 555 Timer (basics).
Day 6: Solve the practice questions in the exam focus section below, one per unit, without the notes.
Day 7: Read only the formula boxes and exam tips, redo the numericals you got wrong, and sleep early.

Common mistakes to avoid

Taking VBE as zero in biasing problems. Use about 0.7 V for silicon unless the question says otherwise.
Confusing voltage-series and current-shunt feedback. Name the sampled quantity first, then the mixing method.
Writing the class B efficiency as 78.5% without showing that it holds only at maximum output swing.
Forgetting the minus sign in the inverting amplifier gain and in integrator outputs.

How Analog Electronic Circuits links to other subjects

This subject builds directly on Electronic Devices, where diodes, BJTs and MOSFETs are studied as devices. It also uses Network Analysis for Thevenin equivalents. It leads into Linear Integrated Circuits, Power Electronics and Embedded Systems hardware.

Exam focus: high-weightage topics

University papers usually give the most weight to rectifiers, BJT biasing, small-signal amplifier analysis, feedback topologies, oscillators and op-amp circuits. Class B efficiency and slew rate are common short derivations and numericals.

Typical long and numerical questions to practise:

Derive Vdc, ripple factor and efficiency of half-wave and full-wave rectifiers.
Find the Q-point of a voltage divider bias circuit and its stability factor.
Draw the small-signal model of a CE amplifier and find Av, Ri and Ro.
Derive the frequency and gain condition of an RC phase shift oscillator.
Show that the maximum efficiency of a class B amplifier is 78.5%.
Derive the output of inverting, non-inverting, integrator and differentiator circuits, and solve a slew-rate numerical.

When you write a long answer, start with a one-line definition, draw the diagram or circuit, write the derivation in clear steps and end with the final result and its unit. For numericals, write the formula first, then substitute, so you can still earn step marks if the arithmetic slips.

These are practice questions based on common syllabus topics. They are not verified past papers, and we do not claim any question will appear in your exam. For real previous papers, use your university's official archive.

Who these notes are for

These notes are for B.Tech ECE and EEE students preparing for their Analog Electronics or Electronic Circuits semester exam, and for students revising GATE EC basics such as biasing, small-signal gain and op-amp circuits. They are also handy before core electronics or embedded hardware interviews, where op-amp and transistor questions are common.

Download Analog Electronic Circuits Handwritten Notes PDF