source:power adapter Popular:adapter release time:2021-09-25 09:42:41 Article author:sznbone
Many electrical appliances in life are equipped with switching power supplies, and switching power supplies are a kind of power supply that uses modern power electronic technology to control the time ratio of switching on and off to maintain a stable output voltage. Then why use a switching power supply? What are the advantages?
1. The power device of the switching power supply works in the on-off state with low power consumption, so it can directly rectify, filter, and adjust the mains power through the power switch tube, without the need for a power frequency transformer. The isolated converter uses a transformer, but due to the high switching rate of the power switch, the transformer used is a high-frequency transformer. Under the premise of the same power, the high-frequency transformer is much lighter than the industrial frequency transformer.
2. At the same time, the power of its power device is small, and the required heat sink is also small. Compared with the linear power supply, it is small in size and light in weight, which is more in line with people's needs in many occasions.
3. Compared with the linear power supply, the switching power supply has the obvious advantage of high efficiency and the required value of the inductor and capacitance is small.
Switching power supply has obvious advantages in terms of efficiency and other aspects compared with linear power supply, so switching power supply has been widely used.
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