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Unformatted text preview: 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 crosssectional 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.
From Faraday’s law: v = N dΦ =
dt µN 2 A di
l
dt We measure the inductance, L = µN 2 A
,
l E1.1 Analysis of Circuits (20133717) di
= L dt . in Henrys (H). Capacitors and Inductors: 9 – 4 / 12 Passive Components
9: Capacitors and Inductors • Capacitors
• Types of Capacitor
• Inductors
• Passive Components
• Series and Parallel We can describe all three types of passive component by the relationship
between V and I using, in each case, the passive sign convention. Inductors
• Series and Parallel
Capacitors • Current/Voltage Continuity
• Average Current/Voltage
• Buck Converter
• Power and Energy
• Summary E1.1 Analysis of Circuits (20133717) Capacitors and Inductors: 9 – 5 / 12 Passive Components
9: Capacitors and Inductors • Capacitors
• Types of Capacitor
• Inductors
• Passive Components
• Series and Parallel We can describe all three types of passive component by the rela...
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This document was uploaded on 02/20/2014 for the course EE 101 at WVU.
 Fall '09
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