What Is The Working Principle Of Switching Power Supply?

A switching power supply is a power supply device used to convert alternating current into stable direct current. It receives power from the grid through the AC input port,

The voltage and current are processed through internal transformers, rectifiers, filters, voltage stabilizers and other circuit components, and stable DC power is output to the load.

Switching power supply has the characteristics of high efficiency, stability and reliability, and has been widely used in modern electronic equipment, communication equipment, industrial automation and other fields.

Switching power supply can convert alternating current into stable direct current, which can be used by various electronic devices. Its main functions include:

1. Stable voltage output: The switching power supply can output stable direct current, effectively avoiding damage to electronic equipment caused by instantaneous voltage fluctuations.

2. Increase circuit efficiency: switching power supply adopts high-frequency switching technology, which makes its conversion efficiency, stability and reliability higher, thereby improving the efficiency and quality of the entire circuit.

3. Reduce heat loss: Compared with the traditional linear power supply, the heat loss of the switching power supply is lower, which can not only reduce the power consumption of the equipment, but also make the life of the power supply longer.

4. Support a wide range of input voltage: The switching power supply has a wide input range, usually supporting AC 90-240V input voltage, which makes electronic equipment more widely adaptable.

5. Smaller size: Due to the high-frequency switching technology, the overall size of the switching power supply is smaller, which can be used more flexibly in the design and save space.