翻訳と辞書 Words near each other ・ Torodora styloidea ・ Torodora vietnamensis ・ Torodorinae ・ Torofluxus ・ Torog (Dungeons & Dragons) ・ Torogan ・ Toroglej River ・ Toroid ・ Toroid Terror ・ Toroidal ・ Toroidal and poloidal ・ Toroidal coordinates ・ Toroidal expansion joint ・ Toroidal Fusion Core Experiment ・ Toroidal graph ・ Toroidal inductors and transformers ・ Toroidal moment ・ Toroidal polyhedron ・ Toroidal reflector ・ Toroidal ring model ・ Toroidh ・ Torok Formation ・ Torokhkatalo ・ Torokina ・ Torokina Airfield ・ Torokina River ・ Toroku arsenic disease ・ Torola ・ Torola River ・ Torolab Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Toroidal inductors and transformers ： ウィキペディア英語版 Toroidal inductors and transformers Toroidal inductors and transformers are passive electronic components, typically consisting of a circular ring-shaped magnetic core of high magnetic permeability material such as iron powder or ferrite, around which wire is coiled to make an inductor. Toroidal coils are used in a broad range of applications in AC electronic circuits, such as high-frequency coils and transformers. An inductor with a closed-loop core can have a higher magnetic field and thus higher inductance and Q factor than similarly constructed coils with a straight core (solenoid coils). This is because the entire path of the magnetic field lines is within the high permeability core, while in an inductor with a straight core the magnetic field lines emerging from one end of the core have a long air path to enter the other end. In recent years, the use of toroidal (donut) shape cores has increased greatly. The advantage of the toroidal shape is that due to its symmetry the amount of magnetic flux that escapes outside the core (leakage flux) is minimum, therefore it radiates less electromagnetic interference (EMI) to nearby circuits or equipment. EMI is of increasing importance in modern low power, high frequency electronics. A side effect in torus-shaped inductors is that, because the winding surrounds the central hole and the current traverses the winding in a circular direction, there is a weak poloidal magnetic flux that threads the "donut hole" in the center of the torus, in addition to the main toroidal flux direction parallel to the core of the torus. ==Total B field confinement by toroidal inductors== In some circumstance, the current in the winding of a toroidal inductor contributes only to the B field inside the windings and makes no contribution to the magnetic B field outside of the windings. This is a consequence of symmetry and Ampère's circuital law. 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「Toroidal inductors and transformers」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.