source:power adapter Popular:adapter release time:2021-11-16 09:41:25 Article author:sznbone
1. It must be realized that the power adapter is a high-frequency, long-term use of electronic products, such as mobile phone chargers, basically we use it every day.
2. The power adapter is a product that requires safety certification, and there may be short-circuit or burning during use.
In short, users must consider quality issues when purchasing power adapters, and the quality is reliable before they can be used safely. U.S. power adapter
The characteristics of the switching power supply are: high-speed pass and cut-off with the switch tube controlled by the circuit. The direct current is converted into high-frequency alternating current and supplied to the transformer for transformation. The wall-mounted Chinese-standard certified power adapter then generates the required set Or multiple sets of voltages! Plug-in type Chinese-standard certified power adapter and it is not very hot during operation!! The cost is very low. If you don't change 50HZ to high frequency, then the switching power supply is meaningless
It is internally composed of a power transformer and a rectifier circuit. According to its output type, it can be divided into AC output type and DC output type; according to the connection mode, it can be divided into wall type and desktop type. There is a nameplate on the power adapter, which indicates the power, input and output voltage and current and other indicators. U.S. power adapter
First, it can enhance the design of the input/output filter circuit, improve the performance of the active power factor compensation (APFC) circuit, reduce the voltage and current change rate of the switch tube, rectifier, and freewheeling diode, and use various soft switching circuit topologies. Structure and control method, etc.; on the other hand, strengthen the shielding effect of the case, improve the leakage of the gap of the case, and conduct a good grounding treatment.
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