over voltage protection

The urgency of strengthening lightning and over voltage protection of telecontrol equipment is expounded with specific measures presented.

阐述了加强远动设备防雷及过电压保护的紧迫性，并提出了具体的防护措施。

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Considering the actual situation of the computer room in Information Center of Guangxi Medical University, the lightning design for the computer network system are composed of split flow, earthing, screening, equipotential and over voltage protection, etc.

根据广西医科大学信息中心机房的具体情况，计算机系统的防雷设计主要采用分流、接地、屏蔽、等电位和过电压保护5种方法。

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Besides, an over voltage protection method for thyristor by BOD is introduced.

另外，介绍了一种利用BOD（转折二极管）器件实现晶闸管过电压保护的方法。

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To improve the reliability of the chip, many protection circuits such as thermal shutdown and over voltage protection are designed.

此外，为提高芯片的可靠性，在设计上还增加了过温保护电路和输出过压保护电路等。

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Aimed at the defects of the old system, this paper also proposes a plan to make improvement in field-suppressing resistor, the circuit of over voltage protection and thermal breakdown circuit of excitation, respectively.

针对原回路存在缺陷，分别从灭磁电阻和过压保护回路的改进、励磁系统热切回路的改进提出了改造方案。

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Discussion on Lightning Protection Over Voltage Protection of Light Current System

弱电系统雷电及过电压防护探讨

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