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:''Magnetic inductance is not to be confused with "Magnetic induction", which usually refers to Magnetic field.'' In a magnetic circuit, ''magnetic inductance (inductive magnetic reactance)'' is the analogy to inductance in an electrical circuit. Magnetic inductance is a concept in the gyrator-capacitor model for magnetic systems.In the SI system, it is measured in units of -Ω−1. This model makes magnetomotive force (mmf) the analog of electromotive force in electrical circuits, and time rate of change of magnetic flux the analog of electric current. The gyrator-capacitor model is a lumped-element model for analysis of magnetic fields. For phasor analysis the magnetic inductive reactance is: : Where: : is the magnetic inductivity (SI Unit: -s·Ω−1) : is the angular frequency of the magnetic circuit In the complex form it is a positive imaginary number: : The magnetic potential energy sustained by magnetic inductivity varies with the frequency of oscillations in electric fields. The average power in a given period is equal to zero. Due to its dependence on frequency, magnetic inductance is mainly observable in magnetic circuits which operate at VHF and/or UHF frequencies. The notion of magnetic inductivity is employed in analysis and computation of circuit behavior in the gyrator-capacitor model in a way analogous to inductance in electrical circuits. ==See also== *Magnetic inductive coil 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Magnetic inductance」の詳細全文を読む スポンサード リンク
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