Circuit Fundamentals
The language of electronics is circuit analysis. Before transistors, amplifiers, or processors can be understood, the governing laws of voltage, current, and energy in passive networks must be mastered. Part I builds that foundation: from Ohm's and Kirchhoff's laws through transient RC/RL/RLC behaviour to the phasor calculus of AC steady-state analysis.
What You'll Learn in Part I
Apply KVL, KCL, and linear algebra to solve any resistive network systematically.
Derive and simulate time-domain responses of first- and second-order circuits.
Use phasors and complex impedance to analyze resonance and power transfer.
Chapter 1: Ohm's & Kirchhoff's Laws
V=IR, series/parallel resistors, KVL, KCL, node-voltage method and mesh analysis — the foundation of all circuit analysis.
Chapter 2: RC, RL & RLC Circuits
Transient analysis of first- and second-order circuits: time constants, step responses, and damping in RLC networks.
Chapter 3: AC Analysis & Phasors
Sinusoidal steady-state analysis using phasors, complex impedance, resonance, and power factor in AC circuits.
Prerequisites
Familiarity with single-variable calculus (derivatives and integrals) and basic complex numbers is assumed. Linear algebra (systems of equations) is used in the node-voltage method; a brief introduction is provided where needed. No prior electronics knowledge is required.