SG75 Circuit Protection

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Gas Discharge Tube Arresters (GDTs) are a type of surge protection device which works to protect electrical systems and equipment from damage caused by high voltage transients or power surges. They are commonly used in telecommunication and industrial equipment. The SG75 is a GDT manufactured by E&K Elektronik, a trusted supplier in this sector.

The SG75 is a classic GDT that is designed for the protection of sensitive electronic circuits against transient overvoltages of up to 4000 volts. It is built using a modified trigatron, a two-connector device consisting of a high-resistance arrester element and a flashover element. It comes in two versions—standard and high-current—both featuring gas-filled electric arc quenching. The standard version can handle current loads of up to 15mA, while the high-current version can handle current loads of up to 60mA.

The SG75 is well-suited for use in a wide variety of application fields, such as in power supplies, communication networks, PCs, home appliances, and electronic measurement and test equipment. It can also be used to protect other highly sensitive components, such as transistors, thyristors, and diodes. It is designed to maintain a low leakage current even under high voltage conditions. This ensures that the device can effectively suppress voltage transients without having a negative effect on the integrity of the protected equipment.

The SG75 works via a simple and efficient principle. When exposed to a surge, it utilizes the energy absorbing characteristics of a gas-filled electric arc quenching system. This system helps to manage and control the discharge pulse, directing it safely away from the device’s terminals. This is achieved by creating a temporary mounted arc which is quickly extinguished once the surge has passed. This is the process by which the device is able to absorb and dissipate the surge energy that it encounters.

In addition to its surge protection properties, the SG75 also has a number of beneficial features that make it attractive to potential users. These include excellent dielectric strength, a long service life, easy installation, low cost, and excellent repeatability. It is also waterproof, making it suitable for use in wet or damp conditions. Additionally, the device is highly resistant to currents of impulse or lightning, making it a reliable and dependable surge protection solution.

The SG75 is a great choice for anyone looking for an effective, reliable, and cost-effective surge protection solution. It is a well-known and trusted product that is suitable for use in a wide array of application fields. Its simple yet effective working principle ensures that it can protect sensitive equipment from voltage transients and power surges, ensuring that the device and connected equipment remain protected and operational.

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