Safety capacitors refer to capacitors that do not cause electric shock and do not endanger people after the capacitor fails. It is often used for filtering in anti-interference circuits. They are used in power supply filters to filter power supply and filter common mode and differential mode interference respectively.
The use of safety capacitors is very extensive, many electronic products are used, with the continuous introduction of electronic products every year, many families have used electronic products, so the protection of capacitors is very important. Generally, capacitors are not easy to break, but sometimes they will be broken, so what is the reason for the failure of safety capacitors?
1. The working voltage greatly exceeds the rated voltage of the safety capacitor, resulting in the safety capacitor being unable to continue to work.
2. The working environment temperature is higher than 85. The working environment temperature of safety capacitors generally does not exceed 85, and there will be problems such as damage and unusability if the working temperature is exceeded.
3. The working environment is too humid, which will also cause the safety capacitor to continue to work.
4. The selection of safety capacitors is incorrect, resulting in the inability of safety capacitors.
5. The quality of the safety capacitor is unqualified, which makes the safety capacitor easy to break and cannot be used when working.