PHY301

Midterm & Final Term
Short Notes

Circuit Theory Lectures: 45


Past Papers Mcq's

Mid Term Important Mcqs From Lec 01 to 22 (Past Papers included) Download PDF


Final Term Important Mcqs From Lec 23 to 45 (Past Papers included) Download PDF


Final Term Important Mcqs From Lec 01 to 45 (Past Papers included) Download PDF

Past Papers Subjective

Mid Term Important Subjective From Lec 01 to 22 (Past Papers included) Download PDF


Final Term Important Subjective From Lec 23 to 45 (Past Papers included) Download PDF


Final Term Important Subjective From Lec 01 to 45 (Past Papers included) Download PDF


Lectures:

1 Lecture - International System of Units 2 Lecture - Negative and Positive Polarities of battery 3 Lecture - Inductance in parallel 4 Lecture - Ideal voltage source 5 Lecture - Current divider with two parallel resistances 6 Lecture - Kirchhoff's Current Law 7 Lecture - Application of Nodal Analysis 8 Lecture - Reference node 9 Lecture - Super Node 10 Lecture - Examples of Nodal Analysis - Super Node technique 11 Lecture - Examples of Loop Analysis 12 Lecture - Applications of Loop Analysis 13 Lecture - Applications of Loop Analysis part 2 14 Lecture - Applications of Loop Analysis part 3 15 Lecture - Applications of Loop Analysis part 4 16 Lecture - Applications of Loop Analysis - Super Mesh Technique 17 Lecture - Examples of Loop Analysis 18 Lecture - Coupling equation 19 Lecture - Matrices and determinants 21 Lecture - Superposition Theorem and examples 22 Lecture - Source Transformation and examples 23 Lecture - Thevenin's Theorem and examples 24 Lecture - Examples of Thevenin's Theorem 25 Lecture - Norton's Theorem with examples 26 Lecture - Norton's Theorem with examples Part 2 27 Lecture - Intrinsic Silicon 28 Lecture - PN Junction Diode 29 Lecture - Terminal characteristics of the Junction diodes 30 Lecture - Analysis of diode circuits 31 Lecture - Terminal characteristics of the Junction diodes 32 Lecture - DC or Static Resistance 33 Lecture - Small Signal Model and its applications 34 Lecture - Transformers 35 Lecture - Load voltage and current 36 Lecture - Full wave rectifier 37 Lecture - Full wave bridge rectifier 38 Lecture - Filters' in Circuit Theory 39 Lecture - Voltage multipliers 40 Lecture - Tunnel diode 41 Lecture - Directions of Currents in BJT 42 Lecture - Collector Emitter Loop 43 Lecture - Emitter-Stabilized Bias Circuit Load Line Analysis 44 Lecture - Circuit Load Line Analysis 45 Lecture - Bridge rectifier

Circuit Theory

Circuit theory is a branch of electrical engineering that deals with the study of electrical circuits and their components. It is concerned with the design, analysis, and application of electrical circuits and networks, as well as the behavior of electrical components in those circuits. Circuit theory is essential for understanding the principles of electrical engineering and is used extensively in the design of various electrical systems. Circuit theory involves the study of the behavior of electric circuits under various conditions. This includes the study of how electrical components, such as resistors, capacitors, and inductors, interact with each other and with external stimuli, such as voltage and current. The principles of circuit theory are also used to design and analyze complex electrical systems, such as communication systems, power grids, and electronic devices. One of the fundamental concepts in circuit theory is the concept of an electric circuit. An electric circuit is a closed path through which an electric current can flow. It consists of a source of electrical energy, such as a battery or a generator, connected to a load, such as a light bulb or an electric motor, through wires or conductors. The components of a circuit can be connected in series, where the current flows through each component in turn, or in parallel, where the current is divided among multiple paths. The behavior of circuits can be described using various mathematical techniques, including Ohm's law, Kirchhoff's laws, and the laws of conservation of energy and charge. Ohm's law states that the current through a conductor between two points is directly proportional to the voltage across the two points. Kirchhoff's laws state that the sum of the currents entering a junction in a circuit must equal the sum of the currents leaving the junction, and that the algebraic sum of the voltages in any closed loop of a circuit must be zero. The principles of circuit theory are used to design various types of electrical circuits, including filters, amplifiers, and oscillators. Filters are used to pass or block certain frequencies of an electrical signal, and are commonly used in audio and radio circuits. Amplifiers are used to increase the strength of an electrical signal, and are used in a variety of applications, such as audio amplifiers and power amplifiers. Oscillators are used to generate signals of a specific frequency, and are used in electronic devices such as radios and televisions. In summary, circuit theory is a fundamental branch of electrical engineering that deals with the study of electrical circuits and their components. It is essential for understanding the principles of electrical engineering and is used extensively in the design of various electrical systems. The principles of circuit theory are used to design and analyze complex electrical systems, such as communication systems, power grids, and electronic devices, and involve the study of how electrical components interact with each other and with external stimuli.