What are the definition and application areas of switching power supply?

witching power supply is a power supply that uses modern power electronics technology to control the time ratio of switching transistors to turn on and off to maintain a stable output voltage.Can be divided into AC/DC and DC/DC two categories,The high frequency of switching power supply is the direction of its development, which miniaturizes the switching power supply and enables the switching power supply to enter a wider range of applications.With the rapid development of power electronic technology, the relationship between power electronic equipment and people's work and life is increasingly close, and electronic equipment can not be separated from reliable power supply.In the 1980s, the computer power supply fully realized the switching power supply, and took the lead in completing the power replacement of the computer.In the 1990s, switching power supplies have entered various electronic and electrical equipment fields, programmable switches, communications, electronic testing equipment power supplies, control equipment power supplies, etc., have been widely used switching power supplies.It also promotes the rapid development of switching power supply technology.Modern switching power supply is widely used in indoor and outdoor led light characters, light boxes, advertising signs, led lights and modules, led display, led lighting, 3D printing, automation equipment, tools and instruments, electric power, industrial control, traffic, network communication, security systems and other fields.The switching power supply develops in the direction of light, small, thin, low noise, high reliability and anti-interference with a growth rate of more than two digits every year, which is of great significance in saving energy, saving resources and protecting the environment.