At present, with the rapid development of domestic science and technology, a variety of new electronic equipment and electronic appliances emerge one after another. Various accessories related to this are also constantly updated to ensure better performance of the product. Today we want to talk about the power adapter, which is an indispensable accessory in electronic equipment and electronic appliances. It can be said to be a voltage conversion device. There is no doubt that any product or equipment, regardless of its quality and performance, may fail. Do you know the common faults and troubleshooting of power adapter?

If the power cord of the power adapter is damaged but not powered on, or the contact port is oxidized, resulting in poor contact, it is necessary to check whether the input line and output line are powered on. If it is a circuit fault, please replace the power cord in time.

Some power adapters have a low output voltage. Why? If the load of the switching power supply is short circuited, first disconnect all loads of the switching power supply circuit. If the voltage output is normal after disconnecting the load circuit, it indicates that the load is too heavy. If it is still abnormal, it indicates that there is a fault in the switching power supply circuit. Poor 300V filter capacitance leads to poor load capacity of the power supply. Once connected to the load, the output voltage will drop.

If the output voltage of the power adapter is too high, it needs to be checked carefully. Any failure of any component will cause the output voltage to rise. Which part has a problem and should be replaced in time. The fuse of the power adapter will blow. At this time, you need to check the diode, rectifier bridge and large filter capacitor on 300V and switch. Of course, the safe burning may be caused by the problem of anti-interference circuit.

Now the market competition is so fierce that many manufacturers are constantly improving the quality and performance of power adapters in order to occupy more sales markets and obtain higher sales. For production enterprises, if they want to have a long-term development, they need to strictly control product quality. Dongguan Lefeng Electric Appliance Technology Co., Ltd. has introduced many advanced production and testing equipment to provide customers with higher quality power adapters to impress the market with products and customers with services.