ABB可控硅5SHY3545L0010主板系列全供应PLC系统 控制器备件

ABB可控硅5SHY3545L0010主板系列全供应PLC系统 控制器备件

可控硅5SHY3545L0010（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、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。

5SHY3545L0010它在交直流电机调速系统、调功系统及随动系统中得到了的应用。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。5SHY3545L0010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。

Silicon Controlled Rectifier 5SHY3545L0010 (Silicon Controlled Rectifier) is a high-power electrical component, also known as thyristor. It has the advantages of small size 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.

5SHY3545L0010 It has been applied in the AC and DC motor speed regulation 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. 5SHY3545L0010 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.