ABB IGCT 5SHY35L4512 可控硅 5SHY系列 中高压器件模块

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ABB IGCT 5SHY35L4512 可控硅 5SHY系列 中高压器件模块

可控硅(Silicon Controlled Rectifier) 简称SCR，是一种大功率电器元件，也称晶闸管。它具有体积小、效率高、寿命长等优点。在自动控制系统中，可作为大功率驱动器件，实现用小功率控件控制大功率设备。它在交直流电机调速系统、调功系统及随动系统中得到了广泛的应用。
可控硅分单向可控硅和双向可控硅两种。双向可控硅也叫三端双向可控硅，简称TRIAC。双向可控硅在结构上相当于两个单向可控硅反向连接，这种可控硅具有双向导通功能。其通断状态由控制极G决定。在控制极G上加正脉冲(或负脉冲)可使其正向(或反向)导通。这种装置的优点是控制电路简单，没有反向耐压问题，因此特别适合做交流无触点开关使用。

电力线以太网网桥是一种设备，用于使用建筑物内现有的电网将局域网扩展到房屋或建筑物内的其他房间。插入交流插座的网桥使用网络电缆连接到路由器，在单独的房间中，另一个网桥插入插座，为另一台计算机或路由器提供以太网端口。

电力线以太网桥也称为电力线以太网适配器。

电力线以太网网桥用于将以太网标准与电力线“桥接”，以允许数据通过建筑物内已经存在的电力线传输。这节省了资金和精力，否则这些资金和精力将被用于运行额外的布线以扩展网络，并且允许人们简单地通过将这些设备插入AC插座来快速建立扩展的网络。这些桥通常是小的矩形设备，比标准的壁式充电器稍大一点。

电力线以太网桥将以太网信号转换成可以通过常规电线传输的形式，然后再将其转换回以太网信号。虽然这很方便，但问题是通过电力线传输的电力很容易受到外部影响，例如空调、冰箱和搅拌机等感性负载的开关，这会引起波动，进而影响桥之间传递的数据信号。这在一定程度上降低了数据传输的速度。电力线以太网网桥使用生成树协议来防止网桥环路。

Silicon Controlled Rectifier (SCR) is a high-power electrical component, also known as a thyristor. It has the advantages of small size, high efficiency and long life. In the automatic control system, it can be used as a high-power driving device to realize the control of high-power equipment with low-power control. It has been widely used in AC and DC motor speed control system, power regulation system and servo system.
Thyristors are divided into two kinds: unidirectional thyristors and bidirectional thyristors. Bidirectional thyristor is also called TRIAC, or TRIAC for short. The bidirectional thyristor is structurally equivalent to two unidirectional thyristors in reverse connection, and this thyristor has a dual pilot pass function. Its on-off state is determined by the control pole G. Adding a positive pulse (or negative pulse) to the control pole G can make it forward (or reverse) conduction. The advantage of this device is that the control circuit is simple and there is no reverse voltage problem, so it is particularly suitable for AC contactless switch use.

A power line Ethernet bridge is a device used to extend a local area network to other rooms within a house or building using the existing electrical grid within the building. A bridge that plugs into an AC socket connects to the router using a network cable, and in a separate room, another bridge plugs into the socket to provide an Ethernet port for another computer or router.

A power line Ethernet bridge is also known as a power line Ethernet adapter.

Power line Ethernet Bridges are used to “bridge” Ethernet standards with power lines to allow data to be transmitted over power lines that already exist within the building. This saves money and effort that would otherwise be spent running additional cabling to expand the network, and allows one to quickly set up an extended network simply by plugging these devices into AC sockets. These Bridges are usually small rectangular devices that are slightly larger than standard wall chargers.

A powerline Ethernet bridge converts an Ethernet signal into a form that can be transmitted over a regular wire, and then converts it back into an Ethernet signal. While this is convenient, the problem is that power transmitted over power lines is vulnerable to external influences, such as the switching of inductive loads such as air conditioners, refrigerators, and mixers, which can cause fluctuations that in turn affect the data signal passed between the Bridges. This reduces the speed of data transmission to some extent. Power line Ethernet Bridges use the spanning tree protocol to prevent bridge loops.