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1. High efficiency：Switching power supply transistors work in the switching state, the switching transistor power loss is small, the efficiency can be greatly improved, the efficiency is usually up to 80% ~ 90% or so.

2, the mass is small：Switching regulated power supply usually adopts the AC voltage directly rectifier from the power grid, removing the stupid power transformer, so that the quality of the power supply is reduced to about one fifth of the original traditional regulated power supply with the same power and the volume is also greatly reduced.

3, wide voltage range：Switching voltage regulator power supply in the input AC voltage from which to 264V changes inch, can achieve good voltage regulation, the change of the output voltage can be guaranteed to be less than 2%.And in the input AC voltage changes always maintain the high efficiency of the voltage regulator circuit.

4, reliable and safe：In the switching regulated power supply, the protection circuit is designed to automatically cut off the power supply in case of load fault or short circuit. The protection function is sensitive and reliable.

5. Small filter capacitance：Because the switching transistors in the voltage regulator circuit mostly adopt higher switching frequency, the capacity of the filter capacitor can be greatly reduced and is easy to be miniaturized.

6, low power consumption：Because the transistor works in the switching state, the power loss is small, there is no need to use a large radiator, the temperature rise in the machine is small, the surrounding components are not damaged because of long-term work in the high temperature environment.Therefore, the use of switching regulated power supply can also help to improve the reliability of the whole machine.