UNIT 12: TRANSFORMERS AND INDUCTIVE COMPONENTS
INTRODUCTION
A transformer transfers electrical energy between two coils using magnetic fields. It can step voltage up or down and provides isolation. Inductive components also include common‑mode chokes and coupled inductors.
STORY 1: How a Transformer Works
A transformer has two coils: primary and secondary, wound on a common magnetic core. When AC flows in the primary, it creates a changing magnetic field. This induces a voltage in the secondary