Principle of overvoltage protection of อุปกรณ์ดับความถี่สูง

The measure of overvoltage protection is to use a varistor in parallel with the two ends of the power supply line. The varistor is very sensitive to voltage. When the voltage exceeds a certain value, its resistance value immediately becomes smaller, so that the current increases sharply. When the device has overvoltage, it will break down the varistor, so that both ends of the power supply will be disconnected, thus protecting the back end of the power supply and avoiding the risk of overvoltage, which serves the purpose of overvoltage protection. As long as the varistor is replaced frequently, the equipment can be used normally, but we need to replace the varistor in time, which is laborious to operate. If it cannot be replaced in time, the equipment circuit may be damaged, and even a fire may occur in severe cases.

Overvoltage protection and undervoltage protection of high-frequency quenching equipment are very important. As long as the voltage value of our equipment exceeds the threshold, the indicator light on the equipment will light up and an alarm will be automatically issued. At this time, the staff should take measures immediately to avoid The situation of better components also prevents the occurrence of problems such as fire. It is safe and efficient.