2882776

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A Varistor is an electrical component with variable electrical resistance, used for protection from dangerous high voltage and also to minimize electrical noise. It is one of the most popular types of protection used in the 2882776 application field, along with MOVs (Metal Oxide Varistors) and TVS (Transient Voltage Suppressor).

A Varistor works by regulating and limiting current flow by increasing and decreasing its resistance levels according to the voltage level. They are also known as voltage dependent resistors (VDRs). When the voltage is lower than the breakdown voltage of the Varistor, it works as a low voltage resistor. When the voltage is higher than the breakdown voltage of the Varistor, it acts as an open circuit, limiting the amount of current that can flow through the device.

MOVs, or Metal Oxide Varistors, are commonly used for surge protection in AC/DC circuits. They are also used to clamp voltages that are outside of the normal operating range. MOVs contain a zinc oxide material and, like Varistors, their electrical resistance dramatically increases when exposed to higher voltages. This helps to limit the amount of current that can pass through the device.

TVS, or Transient Voltage Suppressors, are used to provide protection for data and other sensitive circuits, such as those used in consumer electronics, computers, and automotive systems. They are typically used to clamp voltages during transients, such as surges and over voltage conditions. They are also used to protect against extreme overvoltage conditions, such as electrostatic discharge (ESD) and lightning strikes. TVS devices are designed to respond quickly and operate at high voltages.

In summary, a Varistor is an electrical component commonly used for protection from dangerous high voltage and noise. It’s also known as a voltage dependent resistor (VDR). MOVs are commonly used for surge protection in AC/DC circuits and TVS are used to provide protection for data and other sensitive circuits. Each type of device has its own working principle and application field, but they all function to limit the amount of current that can pass through the device and provide protection against overvoltage conditions.

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