AC Circuit Analysis and Linear Systems

Alternating current is the foundation of modern power systems and electronic communication, yet its behavior differs significantly from simple direct current. Understanding how components like inductors and capacitors interact with oscillating signals is essential for any aspiring engineer or electronics enthusiast. This course provides a clear path to mastering these concepts using mathematical rigor and practical logic. You will transition from basic circuit theory to the dynamic world of AC analysis, gaining the ability to predict how linear circuits respond to various frequencies. By the end of the text, you will be able to confidently calculate circuit parameters and understand the role of phase and power in complex systems. What you'll learn: - Understand the fundamental properties of sinusoidal waveforms and phasor representation - Calculate impedance and admittance for resistors, inductors, and capacitors - Apply nodal and mesh analysis techniques to steady-state AC circuits - Analyze real, reactive, and complex power in electrical systems - Evaluate frequency response and the basic principles of filtering - Explore how AC circuit theory applies to modern sensor applications and signal processing The course begins with foundational definitions of alternating current and phasors before advancing to complex circuit theorems and frequency-domain analysis. You will progress through detailed written explanations and step-by-step calculation examples that reinforce every core concept. This course is designed for beginners in electrical engineering, physics students, or hobbyists with a basic grasp of DC circuits who want to expand their technical knowledge. No prior experience with AC analysis is required. Start building your expertise in linear AC circuits today.