21. Introduction to Inductors
Inductors as basic components are introduced. Energy storage in magnetic fields is covered. The unit of inductance, the Henry is defined. The practical range of inductor values is mentioned. Basic construction of inductors is mentioned. The inductance of a coil of wire is given. The differential current-voltage relationship for inductors is given. The integral relationship current-voltage relationship is given. The energy storage of an inductor is derived from the power equation. Energy stored at dc is determined. A simple dc circuit with an inductor is analyzed. Method for combining parallel and series inductors is given.