A voltage is converted to another voltage, the crude pressure is converted to fine pressure
The main power to change the number of volt voltage you can, such as the common 5V, 12V, 24V, etc., compared to the transformer, switching power supply more rectifier, filter function, you can make the output voltage stability.
Switching power supply is usually divided into AC / DC, DC / DC, DC / AC and other types. Popular is to convert a voltage into a specific voltage for the needs of electrical equipment. Such as car switching power supply is the car's 12V DC voltage into 5V or other voltage for the use of equipment.
Commonly used mobile phone charger (also switching power supply), computer power and so are switching power supply.
