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Gas Discharge Tube Arresters (GDT)

Gas Discharge Tube Arresters (GDTs) are used to protect electronic devices from voltage spikes caused by power surges, lightning and other external sources. GDTs are most commonly used to protect expensive and sensitive electronic components, such as computers, communications equipment and other machinery. GDTs are also used in the manufacturing of electronic equipment to protect against power surges. GDTs are designed to protect both AC and DC power systems.

A GDT is composed of two electrodes, an inner one and an outer one, which are separated by a gas-filled tube. The inner and outer electrodes are sealed inside the glass tube. When a voltage spike strikes the device, the sudden increase in voltage breaks down the resistance of the gas inside the tube, causing a spark or arc between the two electrodes. This spark bridges the gap between the two electrodes, allowing the increased voltage to be safely dissipated and preventing the higher voltage from damaging the electronic component.

One of the main advantages of GDTs is that they have a fast response time, meaning that they are capable of quickly dissipating the increased voltage that often accompanies a power surge. This quick response time helps to ensure that the electronic component in question is not damaged too harshly in the event of an electrical spike. GDTs are also relatively inexpensive and easy to install, making them a popular choice in the field of surge protection.

GDTs can be used in both residential and commercial applications, although the size of the GDTs used will depend largely on the size of the system being protected. In a residential application, small GDTs may be used to protect computers, audio-visual components and other electronic components. In a commercial or industrial application, larger GDTs may be required in order to protect larger equipment, such as industrial robots and other automated machinery.

GDTs are not indestructible and they can be damaged by prolonged and excessive voltage spikes. To protect GDTs from damage, surge protective devices (SPDs) are often used in conjunction with GDTs. Surge protective devices are designed to divert additional voltage away from GDTs and other vulnerable components in an event where the GDTs cannot dissipate the voltage spike. This helps to protect against more significant damage that can be caused by excessive voltage.

Overall, Gas Discharge Tube Arresters offer a reliable and cost-effective way to protect electronic equipment from damaging power surges and lightning strikes. They have a fast response time which helps to ensure that delicate components are not damaged by the increased voltage, and are relatively inexpensive and easy to install. GDTs can also be used in both residential and commercial applications, making them a great choice for electrical protection.

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