back emf

基本解釋

The constitute of harmonic back EMF is analysed, the position detection circuit and the microcomputer control system of step motor is designed.
分析了諧波反電勢信號的構(gòu)成，設(shè)計了相應(yīng)的位置信號檢測電路及步進電動機的微機控制系統(tǒng)。
This paper analyzes the advantage of using sensorless brushless DC motor in fuzzy conversing air-condition, the back EMF method and the start technique.
介紹變頻空調(diào)采用無傳感器無刷直流電機作為壓縮機的優(yōu)越性，反電勢檢測的基本原理以及起動方法。
The magnetic network model of hybrid step motor is established according to the air gap late permeance method, and the expression of the harmonic back EMF is deduced.
利用氣隙比磁導(dǎo)法建立了混合式步進電動機的磁網(wǎng)絡(luò)模型，推導(dǎo)出諧波反電勢的表達(dá)式。

For some who understand the biophysics of RF and EMF, going back to first principles provides a reality check on a possible threat from this low energy form of radiation.
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an electromagnetic force appearing in an inductive circuit in such a direction as to oppose any change of current in the circuit