9401650000

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TVS (Transient Voltage Suppressors) are widely used solid state devices that protect circuits from electrical over-voltage and over-current events, including transient voltage spikes. Varistors (Voltage-Dependent Resistors) and MOVs (Metal Oxide Varistors) are two types of devices used for this purpose.

Varistors are voltage-dependent resistors that provide a low-resistance path when the applied voltage exceeds a certain breakdown voltage. This breakdown voltage depends on the device construction and is usually designed for a single application. Varistors are constructed from semiconductor materials such as zinc oxide, silicon carbide, and gallium arsenide. The common categories for these devices are surge absorber, transient suppressors, and EMI (electromagnetic interference) filter.

MOVs are a type of variable resistor made of metal-oxide material. These devices are used to protect circuits from over-voltage and over-current conditions by providing a low-impedance path for current to flow when the applied voltage exceeds the threshold level. MOVs are particularly useful in alternating current (AC) applications due to their ability to absorb transient voltage spikes. The construction of MOVs consists of two layers of metal-oxide material stacked together with a dielectric layer between them. The dielectric layer is usually made of aluminum oxide or magnesium oxide.

The 9401650000 application field and working principles of MOVs and Varistors both equally serve the purpose of providing protection for circuits from over-voltage and over-current conditions. However, MOVs are typically used in AC applications due to their ability to absorb transient voltage spikes, while Varistors are more appropriate for high voltages or DC applications. Both types of devices have their own benefits and should be chosen based on the application.

In conclusion, TVS technologies such as Varistors and MOVs provide reliable protection in various types of circuits from exposure to electrical over-voltage and over-current conditions. Varistors are well suited for DC applications, while MOVs are more effective in AC applications. It is important to choose the appropriate device for the application and circuit in order to ensure effective protection.

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