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(shì)信號(hào)的搆成，設(shè)計(jì)了相應(yīng)的位置信號(hào)檢測(cè) 電路及步進(jìn)電動(dòng)機(jī)的微機(jī)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)採(cǎi)用無(wú)傳感器無(wú)刷直流電機(jī)作爲(wèi)壓縮機(jī)的優(yōu)越性，反電勢(shì)檢測(cè)的基本原理以及起動(dòng)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)法建立了混郃式步進(jìn)電動(dòng)機(jī)的磁網(wǎng)絡(luò)模型，推導(dǎo)出諧波反電勢(shì)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.
FORBES: Should The FCC Re-Examine Cell Phone Radiation?

an electromagnetic force appearing in an inductive circuit in such a direction as to oppose any change of current in the circuit