1) Common mode EMI suppression
共模干扰抑制
2) common mode
共模
1.
Planar passive integrated in common mode and differential mode filter;
差共模滤波器的平面无源集成
2.
In switching mode power supply (SMPS), EMI filters play a notable role in suppressing common mode (CM) and differential mode (DM) conducting noise.
在开关电源中,EMI滤波器对共模和差模传导噪声的抑制起着显著的作用。
3) Common-mode
共模
1.
Then,the paper analyzes common-mode voltage and output voltage range of operational amplifier influenced by temperature and process problems that may appea.
基于混沌、均匀分布的真随机数发生器的工作电路和精度要求较高的电压参考电路的温度漂移进行分析,给出了仿真得到的温度曲线;分析了工艺中可能存在的问题和温度的影响与运放的共模电压和输出电压幅度,以及与混沌公式直接相关的开关电容等,根据最坏分析得到混沌公式,给出了仿真测试结果。
2.
The equivalent and simplified circuits of the common-mode and differential-mode are discussed.
文中给出了一般EMI滤波器的拓扑结构,分别指出其共模和差模等效电路,并对共模和差模等效电路进行化简。
3.
Aiming at the suppression principle of switch power supply EMI,this paper designs the magnetic core of EMI filter,which includes the choice of common-mode inductor s material and the calculation of magnetic core′s winding.
针对开关电源的电磁干扰抑制原理,设计了电磁干扰滤波器磁芯,包括共模感应器材料的选择,磁芯线圈的计算。
4) common model
共模
1.
This paper discusses common model Insert Loss (IL) and differential mode IL of electromagnetic interference (EMI) filters of switching mode power supply,and studies theoretical analysis and measure is gained,various reasons of effect IL are analysed and its improvement methods is got.
研究了电磁干扰(EMI)滤波器的共模和差模插入损耗(IL),并进行理论分析和测量;分析了影响IL的各种原因及改进方法。
5) CM
共模
1.
There are some differential-mode(DM) and common-mode(CM) noise in conducted EMI (electromagnetic interference) system,it is very important to measure the DM and CM separately in order to analyze the conducted EMI.
在传导EMI(电磁干扰)中既存在共模电流也存在差模电流,要很好的分析传导EMI系统,就很有必要对共模干扰信号和差模干扰信号分离开来单独进行测试。
2.
CM and DM are the two conducted form of the conducted EMI,this paper discuss the CM and DM in the noise s.
共模干扰和差模干扰是传导EMI的两种传导形式,本文从产生源、传播路径方面分别对共模干扰和差模干扰进行了论述。
6) common mode interference
共模干扰
1.
This paper introduces the generaing mechanism of electromagnetic interference,how to diagnose the common mode interference and difference mode interference from interference source and frequency,and take effective measures to control the interference.
详细介绍了电磁干扰产生的机理 ,以及从干扰源和频率上如何诊断共模干扰、差模干扰 ,并采用有效的措施进行抑
2.
A simple and reliable method to solve the false "current leakage" is described from the angle of controlling the common mode interference.
分析了现有铁路客车DC600 V供电系统漏电流产生的原因,并从抑制共模干扰的角度出发,介绍了一种简单可靠的解决假"漏电"问题的方法。
3.
Emphasis is placed on the differential mode filtering principle and application of differential mode filter capacitors and the common mode interference concept and application of common mode filter capacitors.
介绍了容性滤波的原理,并以工程实际事例说明容性滤波的应用,着重说明了差模滤波的原理及差模滤波电容器的应用及共模干扰的概念及共模滤波电容器的应用。
参考词条
补充资料:共模干扰
共模干扰
common mode interference
gongmo gonroo共模干扰(eommon mede interferenee)出现在电路往、返引线与规定参考点(通常是地或机壳)之间的电磁干扰。它使整个电路对参考点的电位一起升高,如图1中的。二。产生共模干扰的原因很多,例如雷电流、短路电流或其他放电电流等通过接地极时引起的地电位升高和接地引线阻抗上的电压降,外界电场对往、返引线的电场报合,外界磁场藕合(见感应辐合)或辐射辐合引起的地环干扰(见抗干扰接地)等。 图l共模干扰e.一裸电动势,L:LZ一往、返引线. Z一受端阻抗;鲡一共模干扰 共模干扰ecm在电路中不直接形成与源电动势(有用信号)。,相申联的干扰电压,但较强的共模干扰有可能使电路对地绝缘承受较高的电压而导致闪络或击穿,造成所谓的“反击”事故。 共模干扰在某土门日日日日日些情况下可全部或部分转换为差模干扰,需预加防范。图2为共模转换典型电路,共模干扰ecm可在电路的往、返引线Ll和L:中驱动方向相同的共模电流icmJ和编:。若电路阻抗完全对称,则这对共模电流相等。此时受端阻抗上两端的对地电压。,和ueZ相等,而不呈现干扰电压。若电路阻抗不对称,则这对共模电流不相等,它们在引线阻抗ZL,和ZLZ上形成不同的电压降。此时往返引线受端对地电压之差“d,一ue,一ueZ便成为受端阻抗Z两端之间的干扰电压,称作共模转换的差模干扰。 为抑制共模转换的差模干扰,可采取如下措施:①抑制差模干扰本身的多种措施;②减小共模干扰:降低接地电阻,缩短接地引线,减小地环面积等;③增加地环阻抗.以限制共模电流:采用一点接地方式、共模干扰抑制器等;④加强共模电流的分流:采用多点接地方 图2共模转换 es一源电动势;ee。一共模干扰;ZL,、ZLZ一引 线阻抗;Z一受端阻抗;C,l、C.2一对地电容; 左m一、儿mZ一共模电流;价,、ueZ一对地电压; udm一干扰电压式等;⑤均衡各接地点的电位:敷设金属板接地回路或大面积接地网等;⑥减小电缆的转移阻抗:采用双屏蔽电缆,把单屏蔽电缆穿金属管等;⑦电路对称化技术:采用双纹线,平衡电缆接线,差动放大器等;⑧隔离共模干扰:采用隔离变压器、光藕合器或光缆等。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。