With the rapid development of science and technology in China, various new electronic equipment and electronic appliances are emerging in endlessly. Various accessories related to this are also constantly updated to ensure that the products have more outstanding performance. 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 equipment. No matter how good the quality and performance of any product or equipment are, there is no doubt that it may fail. Do you know the common faults and troubleshooting methods of the power adapter?
If the power cord of the power adapter is damaged and is 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 line fault, replace the power cord in time.
Some power adapters have low output voltage. What is the cause? When the load of the switching power supply is short circuited, all loads of the switching power supply circuit shall be disconnected first. If the voltage output is normal after the load circuit is disconnected, it indicates that the load is too heavy. If it is still abnormal, it indicates that the switching power supply circuit is faulty. The 300V filter capacitor is poor, resulting in poor load capacity of the power supply, and the output voltage will drop once the load is connected.
If the output voltage of the power adapter is too high, you need to check carefully. Any problem with any part will cause the output voltage to rise. Any part that has problems should be replaced in time. The fuse of the power adapter will be burnt out. At this time, you need to check the diodes, rectifier bridges, large filter capacitors on 300V and switch tubes. Of course, the fuse may be burnt out due to the problem of anti-interference circuit.
Now the market competitiveness is so fierce that many manufacturers are constantly improving the quality and performance of power adapters in order to occupy more sales markets, so as to have higher sales. For production enterprises, if they want to have a longer-term development, they need to strictly control the product quality. Xinjukang technology has introduced a number of advanced production and testing equipment, just to provide customers with higher quality power adapters, impress the market with products and customers with services.
For more information about power adapter, please pay attention to xinjukang Technology: http://www.xjkpower.com
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