Switching power leakage solution

The leakage problem of switching power supply is a common problem in the use of electrical appliances, which will not only cause security risks, but also reduce the stability and life of the equipment. When using switching power supply, we often encounter the problem of leakage at the output end, in order to solve this problem, we need to discuss the causes of leakage and solutions.

First, switching power leakage reasons

1. Short circuit of neutral line and ground line: When the switching power supply is connected to the socket or fixed by tying a cable, if the neutral line and ground line are short circuit, there will be leakage. This situation usually occurs when the socket wiring is not standardized, or the machine is loose and falls off, resulting in poor contact of the zero and ground wires.

2. Aging of components: The components inside the switching power supply, such as capacitors, resistors, transformers, etc., will be aging and damaged with the extension of the use time, resulting in leakage.

3. External interference: If there is strong electricity, strong magnetic field and other interference in the environment used by the switching power supply, it will also affect the normal operation of the equipment, which may lead to leakage.

Second, switching power leakage solution

1. Strengthen leakage protection: When the switching power supply is designed, the leakage protection circuit should be added to ensure that the current is within the safe range.

2. Ensure that the cables are correctly connected: In the socket or patch board, ensure that the neutral wire and the ground wire are connected to the corresponding socket, and do not connect to each other or staggered. At the same time, pay attention to the stability of the wiring, do not appear loose situation.

3. Replace damaged components: If the components in the switching power supply are aging or damaged, replace them in time.

4. Eliminate external interference: as far as possible to avoid switching power supply by strong electricity, strong magnetic field and other external interference, so as not to cause equipment failure or leakage.

5. The use of standard qualified switching power supply: we should choose a switching power supply with good quality and in line with national standards to fundamentally avoid the problem of switching power leakage.

Third, the coping measures after the switching power leakage

1. Power off immediately: If the leakage problem is found, the power supply should be cut off immediately.

2. Find the cause of the fault: Find the cause of the leakage of the device, check one by one, and find the fault.

3. Repair according to the actual situation: Repair specific problems, such as replacing components and adjusting connection modes.

4. Repeat test: Check whether the device is successfully repaired and repeat test the leakage of the device.

In short, switching power leakage is a common problem, should cause our attention. We need to fundamentally solve this problem, strengthen leakage protection, ensure correct wiring, replace damaged components, eliminate external interference and other aspects to prevent and solve the switching power leakage problem. At the same time, if the equipment has leakage, we also need to stop immediately, find the fault, repair and repeat testing to ensure the safe and stable operation of the equipment.