On the Importance of Safety Capacitors in Power Supplies

Sometimes we will see news of death due to electric shock by touching the socket panel, but with the development of electronic components and the improvement of people’s safety awareness, such accidents have become less and less. So what is protecting people’s lives?

There are different electronic components in the power supply. When you turn on the switching power supply, you can see that there are a yellow box-shaped electronic component and a blue dis electronic component. These two electronic components are safety capacitors, and the yellow box is a safety X capacitor. The blue one is the safety Y capacitor. So what are they used for in switching power supplies?

For safety capacitors, the external power supply will be rapidly discharged after being disconnected, and there will be no inductance when people touch, and after the safety capacitors fail, they will not cause electric shock and will not harm the human body. However, after the external power supply of ordinary capacitors is disconnected, there will be charge accumulation, and people will feel electric shock when they touch them. Therefore, most switching power supplies now use safety capacitors instead of ordinary capacitors. Safety capacitors must be certified by CQC, ENEC, UL, KC and other safety regulations.

Although there are safety capacitors in the power supply now, you don’t need to worry too much about leakage and damage to the human body, but you still need to pay attention in your daily life, especially if you have children at home. Children are very active and curious. Take a protective measure on the power supply or put the power socket in a place where children can’t touch it so that they are free from any possibilities of danger.

There are many types and models of capacitors on the market. When purchasing safety capacitors, in addition to paying attention to whether there is safety certification on the body of the safety capacitor , you should also pay attention to whether the safety capacitor manufacturer you choose is trustworthy.

JYH HSU(JEC) Electronics Ltd (or Dongguan Zhixu Electronic Co., Ltd.) has a full range of varistor and capacitor models with guaranteed quality. JEC has passed ISO9001:2015 quality management system certification. Welcome to contact us for technical problems or business cooperation.