Shanghai Chenzhu Instrument CO., LTD.
Shanghai Chenzhu Instrument CO., LTD.

The Importance of Signal Surge Protectors for Lightning Safety of Electronic Systems

Aug 21 , 2025
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    Signal Surge Protector is a type of surge protector, which refers to a lightning protection device that is connected in series in the signal line to limit transient overvoltage and discharge surge current in the signal line. In today's society where microelectronic devices are widely used,signal surge protectors are crucial for the lightning protection safety of electronic systems.


    Non-linear Components of the Signal Surge Protector


    The signal surge protector's ability to discharge lightning current and limit surge voltage are both accomplished by the nonlinear components in thesignal surge protector. The nonlinear components in the signal surge protection device are nonlinear resistors that also function as switching elements. The working principle of thesignal surge protector is that the nonlinear resistor is connected between the line and the ground. Normally, it can be considered an open circuit. When overvoltage occurs in the electronic system, the transient overcurrent that exceeds the system's capacity is discharged into the ground, thereby reducing the overvoltage on the line or equipment and ensuring the safety of signal lines and equipment.


    The Role of the Signal Surge Protector


    The signal surge protector primarily protects various signal lines and equipment from lightning, with the following main functions:


    The signal surge protector limits transient overvoltage caused by induced lightning in the signal line. Surveys show that more than 80% of electronic systems' lightning strikes are caused by induced lightning. Therefore, with the widespread application of microelectronic devices in modern society, the protection against induced lightning in electronic systems should be enhanced by installing suitable signal surge protectors.


    The signal surge protector limits surges caused by the startup and shutdown of electronic systems. Besides induced lightning, the most important reason for surges in signal lines is the startup and shutdown of electronic equipment. These surges are common, and by installing suitable signal surge protectors, the surges caused by the operation of electronic systems can be effectively suppressed, reducing the degradation and failure of sensitive electronic components and ensuring signal line stability, extending the life of electronic equipment.


    In summary, we can understand the importance of thesignal surge protector. When designing lightning protection for building electronic information systems, comprehensive planning should be done based on the characteristics of the building's electronic information systems, meeting the overall project requirements, coordinating and unifying, ensuring safety, reliability, advanced technology, and economic rationality by adopting comprehensive signal surge protectors.

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