Description: 几乎所有设备的传导干扰都包含共模噪音和差模噪音，开关电源也不例外。共模干扰是由于载流导体与大地之间的电位差产生的，其特点是两条线上的杂讯电压是同电位同向的；而差模干扰则是由于载流导体之间的电位差产生的，其特点是两条线上的杂讯电压是同电位反向的。-almost all the equipment includes EMI common mode noise and differential mode noise, switching power supply is no exception. Common mode noise is due to current carrying conductor between the earth and the potential of the poor, Its characteristics are two lines of noise voltage is the same with the potential to; while differential mode interference is the result of current-carrying conductor of the potential difference, Its characteristics are two lines of noise voltage potential is the reverse of the same. Platform: |
Size: 50260 |
Author:钱立志 |
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Description: 几乎所有设备的传导干扰都包含共模噪音和差模噪音，开关电源也不例外。共模干扰是由于载流导体与大地之间的电位差产生的，其特点是两条线上的杂讯电压是同电位同向的；而差模干扰则是由于载流导体之间的电位差产生的，其特点是两条线上的杂讯电压是同电位反向的。-almost all the equipment includes EMI common mode noise and differential mode noise, switching power supply is no exception. Common mode noise is due to current carrying conductor between the earth and the potential of the poor, Its characteristics are two lines of noise voltage is the same with the potential to; while differential mode interference is the result of current-carrying conductor of the potential difference, Its characteristics are two lines of noise voltage potential is the reverse of the same. Platform: |
Size: 50176 |
Author: |
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Description: 铁氧体(铁氧体磁环-铁氧体磁珠)的描述，以及在抑制电磁干扰(EMI)中的应用．-Ferrite (ferrite cores- ferrite bead) description, as well as the suppression of electromagnetic interference (EMI) applications. Platform: |
Size: 33792 |
Author:luoye |
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Description: PCB EMI设计规范 产品内部的电磁抗干扰兼容性设计 电磁兼容设计的一般准则 我国现行的电磁兼容标准-PCB EMI design specifications products within the electromagnetic interference compatibility of design Electromagnetic Compatibility Design of the general guidelines China' s current standards for electromagnetic compatibility Platform: |
Size: 2539520 |
Author:张志强 |
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Description: F240在工业级应用中的EMI抗干扰问题描述。是TI的原版文档。-F240 in industrial applications in EMI interference problems described. Is TI' s original document. Platform: |
Size: 67584 |
Author:x |
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Description: P89V51RB2/RC2/RD2 是一款 80C51 微控制器，包含 16/32/64kB Flash 和 1024 字节的数
据RAM。
P89V51RB2/RC2/RD2 的典型特性是它的X2 方式选项。利用该特性，设计工程师可使
应用程序以传统的 80C51 时钟频率（每个机器周期包含 12 个时钟）或X2 方式（每个机器
周期包含6 个时钟）的时钟频率运行，选择X2 方式可在相同时钟频率下获得2 倍的吞吐量。
从该特性获益的另一种方法是将时钟频率减半而保持特性不变，这样可以极大地降低电磁干
扰(EMI)。 -P89V51RB2/RC2/RD2 is an 80C51 microcontroller, including 16/32/64kB Flash and 1024 bytes of data RAM. P89V51RB2/RC2/RD2 typical feature is its X2 mode option. Using this feature, engineers can design the application to the conventional 80C51 clock rate (per machine cycle consists of 12 clock) or X2 mode (each machine cycle consists of six clock) clock frequency operation, select the X2 mode in the same clock frequency was two times the throughput. Benefit from the characteristics of an alternative method is to halve the clock frequency while maintaining the same characteristics, this can greatly reduce the electromagnetic interference (EMI). Platform: |
Size: 1227776 |
Author:达摩 |
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Description: 本文講述了一個基於FAN4800 連續PFC 前端的雙管正激電源的功率級設計。回顧了這種電源的設計選擇。討論的實際課題包括功
率器件選型，電磁設計，佈局和電磁干擾 (EMI)，目的在於幫助工程師加速並改善其設計。-This article about a front-end based on the FAN4800 PFC consecutive two-transistor forward power stage power supply design. Review this power supply design options. The actual topics discussed include the selection of power devices, electromagnetic design, layout, and electromagnetic interference (EMI), designed to help engineers to speed up and improve its design. Platform: |
Size: 536576 |
Author:侯国建 |
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Description: Abstract: Randomized modulation is of increasing interest in power
electronics and also holds promise for reducing filtering requirements
in ac/ac, dc/dc converter application and reducing acoustic noise in
motor drive applications. This paper deals with the power spectrum
density (PSD) estimation methods of the random controlled pulse
width modulation (RPWM) single-phase structured boost rectifier.
Estimated PSD is also experimentally verified. The switch-mode
operation of the converter results in Electromagnetic Interference
(EMI) which is produced due to large di/dt and dv/dt. In addition to
all steps to minimize the generation of EM1 (i.e. introduction of
RPWM), improvement of power spectra will also be considered. Platform: |
Size: 337920 |
Author:venkatesh |
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Description: 用一个 EMI 滤波器插入电源线和 SMPS 之间能消除高频干扰-With an EMI filter is inserted between the power line and SMPS to eliminate high-frequency interference Platform: |
Size: 339968 |
Author:fff |
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Description: 完全替换 PCA82C250 的 TJA 1 040 高速 CAN 总线收发器
特征
• 完全符合 ISO 11898 标准
• 速度高 高达 1Mbaud
• 电磁辐射 EME 非常低
• 差动接收器具有较宽的共模范围 可抗电磁干扰 EMI
• 处于不上电状态的收发器会从总线脱离 零负载
• 输入级符合 3.3V 和 5V 的器件
• 如果使用分裂终端 电压源可以稳定隐性总线电平 进一步改善 EME
• 至少可以连接 110 个节点
• 消耗电流极低的待机模式 具有通过总线唤醒 远程 的功能
• 发送数据 TXD 显性超时功能
• 在汽车的瞬态环境下对总线引脚进行保护
• 防止总线引脚和引脚 SPLIT 对电池和对地短路
• 热保护-
PCA82C250 completely replace the TJA 1 040 high-speed CAN bus transceiver
Feature
• Fully ISO 11898 compliant
• High speed up 1Mbaud
• Electromagnetic radiation is very low EME
• differential receiver has a wide common-mode range anti-electromagnetic interference (EMI)
• in non-state transceiver power will be out zero load bus
• Qualifying 3.3V and 5V input devices
• If you use a split terminal voltage source can stabilize the recessive bus level to further improve EME
• At least 110 nodes can be connected
• Very low current consumption in standby mode with wake-up function remotely via the bus
• transmit data TXD dominant time-out function
• vehicles under transient environment protection on the bus pins
• Prevent bus pins and pin SPLIT battery and shorted to ground
• Thermal protection Platform: |
Size: 291840 |
Author:chenmo |
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Description: this VERY important file in the electromagnetic interference-this is VERY important file in the electromagnetic interference Platform: |
Size: 257024 |
Author:jagadeesh |
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Description: EMI电源滤波器起到两个低通滤波器的作用:一个是衰减共模干扰，另一个是衰减差模干扰。 EMI电源滤波器能在阻带范围内衰减射频能量，而让工频无衰减，或者很少的衰减，就能通过EMI电源滤波器。 EMI电源滤波器是电子设备设计工程师控制传导电磁干扰和辐射电磁干扰的首选工具。(The EMI power filter plays the role of two low pass filters: one is to attenuate the common mode interference and the other is to attenuate the differential mode interference. The EMI power filter can attenuate radio frequency energy in the range of stopband, and make the power frequency without attenuation, or little attenuation, can pass the EMI power filter. The EMI power filter is the preferred tool for electronic device design engineers to control the transmission of electromagnetic interference and radiation electromagnetic interference.) Platform: |
Size: 16384 |
Author:jjk-8
|
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