Overvoltage protection

In electrical and electronic circuits, when an abnormal voltage exceeding the rated value is detected at the sensing section of the circuit, the system stops output by shutting down the circuit, thereby protecting the secondary circuit. This mechanism is synonymous with OVP. Some systems automatically recover when the cause of the overvoltage is removed, while others require manual recovery after safety confirmation. Overvoltage protection functions are widely used, from high-power transmission and distribution circuits to low-power electronic circuits. In transmission and distribution circuits, overvoltage protection also plays an important role in preventing electrical accidents such as electric shocks.