TVS - Varistors, MOVs

Circuit protection refers to the use of devices and systems to protect electronic circuits from damage due to overcurrent, overvoltage, and other electrical hazards. This can include devices such as fuses, circuit breakers, and surge protectors, as well as other protective measures such as proper circuit design and component selection. TVS (transient voltage suppression) diodes, varistors, and MOVs (metal oxide varistors) are all types of circuit protection devices that are used to protect against overvoltage and surges in the power supply. These devices are commonly used in a wide range of electronic circuits, such as in power supplies, in power distribution systems, and in many other applications. TVS diodes are a type of diode that is specifically designed for use in transient voltage suppression (TVS) applications. These diodes are typically used in pairs, with one diode connected in each direction, to provide protection against overvoltage in both directions. Varistors and MOVs are two types of devices that are based on the varistor (variable resistor) effect. These devices consist of a ceramic or polymer material that exhibits a highly non-linear resistance when a voltage is applied to it. This non-linear resistance allows the device to act as a voltage-dependent resistor, clamping the voltage to a safe level and protecting the circuit from overvoltage. Varistors and MOVs are commonly used in a wide range of applications to provide overvoltage protection.