Download Analog Circuit Quantum pdf AKTU B-tech 2nd year:Analog Circuit Quantum PDF


Analog circuits play a crucial role in the field of electronics. They deal with continuous signals and are fundamental to various electronic devices, including audio systems, power supplies, and signal processors. Understanding analog circuits is essential for every electrical engineering student, and the Analog Circuit Quantum book is a valuable resource that can aid in your learning journey.

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Understanding Analog Circuit Quantum:

What are Analog Circuits?

Analog circuits are electronic circuits that process continuous signals, such as voltage and current, without digital conversion. These circuits use a range of components to amplify, filter, and manipulate signals. Unlike digital circuits that operate with discrete values (0s and 1s), analog circuits work with continuous voltage and current levels.

Basic Concepts in Analog Circuits:

To understand analog circuits better, let’s explore some of the basic concepts and components involved:

Voltage and Current

Voltage represents the electric potential difference between two points in a circuit, while current refers to the flow of electric charge through a conductor. Understanding the relationship between voltage and current is fundamental to comprehending how analog circuits function.


Resistors are passive electrical components that regulate the flow of electric current. They introduce resistance into a circuit and are essential for controlling current levels and voltage division.


Capacitors store electric charge and release it when needed. They are widely used in analog circuits for various applications, such as filtering and coupling.


Inductors are passive components that store energy in a magnetic field. They are used in analog circuits for applications like energy storage, filtering, and impedance matching.

Circuit Analysis Techniques

Analyzing analog circuits requires applying certain techniques. Let’s explore some commonly used methods:

Kirchhoff’s Laws

Kirchhoff’s laws, including Kirchhoff’s voltage law (KVL) and Kirchhoff’s current law (KCL), are fundamental principles used to analyze complex circuits. KVL states that the sum of voltage drops across a closed loop is zero, while KCL states that the sum of currents entering and leaving a node is zero.

Ohm’s Law

Ohm’s Law relates the voltage across a resistor to the current flowing through it. It states that the current passing through a resistor is directly proportional to the voltage across it and inversely proportional to its resistance.

Thevenin’s and Norton’s Theorems

Thevenin’s theorem and Norton’s theorem are powerful tools used to simplify complex circuits into equivalent circuits. Thevenin’s theorem allows the representation of a circuit as a voltage source in series with a resistor, while Norton’s theorem uses a current source in parallel with a resistor.

Common Analog Circuit Components:

Analog circuits consist of various components that perform specific functions. Let’s explore some common components:

Operational Amplifiers

Operational amplifiers, often referred to as op-amps, are widely used in analog circuits for amplification, filtering, and mathematical operations. They are versatile and serve as building blocks for many circuit designs.


Diodes are electronic devices that allow the flow of electric current in one direction while blocking it in the opposite direction. They are essential for rectification, switching, and signal modulation in analog circuits.


Transistors are semiconductor devices that amplify or switch electronic signals and power. They are key components in analog circuits and are used in various applications, including amplifiers and oscillators.

Analog Circuit Design:

Analog circuit design involves creating circuits that perform specific functions. Here are some common types of analog circuits:


Filters are circuits used to selectively allow or block certain frequency components in a signal. They find applications in audio systems, communication devices, and signal processing.


Amplifiers increase the power or amplitude of a signal. They are crucial in audio systems, wireless communication, and sensor circuits, among other applications.


Oscillators generate repetitive waveforms, such as sine waves or square waves. They are used in applications like signal generation, clock circuits, and frequency synthesis.


Comparators compare two analog voltages and output a digital signal indicating which voltage is higher. They are commonly used in analog-to-digital converters and voltage level detection circuits.

Applications of Analog Circuits:

Analog circuits have a wide range of applications in various fields. Here are some common areas where analog circuits are utilized:

1.Audio Systems
2.Signal Processing
3.Power Supplies.


Analog circuits form the foundation of various electronic systems and devices. Understanding the basic concepts, components, and design techniques in analog circuits is essential for electrical engineering students. The Analog Circuit Quantum pdf provides valuable insights into this field, helping B-Tech students at AKTU and beyond in their learning journey.

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