source:power adapter Popular:adapter release time:2021-07-16 13:35:21 Article author:sznbone
Power adapters are widely used, which determines the use and charging of many electronic and electrical equipment in our lives, especially convenient mobile devices, notebook computers, etc., so the quality of power adapters is a problem we are concerned about. In fact, there are some problems in power adapters. Many quality problems.
Talking about what aspects of the power adapter should pay attention to
1. The product identification is incomplete or irregular.
The label should contain important information to guide the user in the correct installation and use. Labeling products correctly is one of the basic measures to ensure the safety of users' personal and property. Marking needs to be durable and eye-catching. After normal use, the mark should not fall off, and the content should be clean and distinguishable. Common problems in this regard are that there is no Chinese logo, no factory name or trademark, no model code or model specification, etc. It may be fake and inferior products.
2. The heating under normal working conditions does not meet the requirements.
The function of the power adapter is to change the voltage. In the process of voltage conversion, due to loss, a part of electric energy needs to be consumed. After the electrical energy is converted into heat energy, part of the heat energy is transferred to the surrounding environment through radiation, convection and conduction. Another part of the heat energy is absorbed by itself, which warms the temperature of the power adapter. So when the surrounding ambient temperature is too high, we should stop using the power adapter.
3, short circuit and overload, there are hidden dangers and safety hazards.
In the case of output short-circuit, capacitor or diode short-circuit, the internal loss of the power adapter increases sharply, causing the temperature rise of each component. The design and application of electronic circuits should ensure that under abnormal working and fault conditions, the temperature rise of each part of the product cannot exceed the specified requirements, otherwise the consequences of a short circuit will be disastrous. It may even bring fire.
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