Lecture Notes 9_Reactive

N a the magnetic ux within the coil is l i where n is

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Unformatted text preview: d Inductors: 9 – 4 / 12 Inductors 9: Capacitors and Inductors • Capacitors • Types of Capacitor • Inductors • Passive Components • Series and Parallel Inductors • Series and Parallel Capacitors • Current/Voltage Continuity • Average Current/Voltage • Buck Converter • Power and Energy • Summary Inductors are formed from coils of wire, often around a steel or ferrite core. µN A The magnetic flux within the coil is Φ = l i where N is the number of turns, A is the cross-sectional area of the coil and l is the length of the coil (around the toroid). µ is a property of the material that the core is made from and is called its permeability . For free space (or air): µ0 = 4π × 10−7 = 1.26 µH/m, for steel, µ ≈ 4000µ0 = 5 mH/m. E1.1 Analysis of Circuits (2013-3717) Capacitors and Inductors: 9 – 4 / 12 Inductors 9: Capacitors and Inductors • Capacitors • Types of Capacitor • Inductors • Passive Components • Series and Parallel Inductors • Series and Parallel Capacitors • C...
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