What Is AC DC Switching Power Supply?

Many people do not understand switching power supply, and will confuse AC to DC power supply with DC to DC power supply. What is the difference between them?

At present, there are a variety of power supplies on the market, and switching power supplies are widely used in almost all electronic equipment with the characteristics of small size, light weight and high efficiency. Switching power supply is a kind of power supply that uses modern power electronics technology to control the time ratio of switch on and off and maintain stable output voltage. AC DC is one of the switching power supplies. AC DC power supply - AC is AC and DC is DC. It is filtered by high voltage rectification to obtain a DC high voltage for the DC-DC converter to obtain one or several stable DC voltages at the output end. The power range from several watts to thousands of watts, which can be used in different occasions. There are many specifications and models of these products, which depend on the needs of users. The primary power supply (AC220 input, DC48V or 24V or 12V output) in the communication power supply also belongs to this category.

Some parameters to measure the quality of smps mainly include these factors, such as efficiency, ripple and noise.The higher the efficiency, the better the quality; The lower the ripple, the better the quality; The lower the noise, the better the quality.Efficiency refers to the ratio of output power to input power. If the efficiency is high, the heat generated will be less, the input power will be less, and the electric energy consumed will be less.This directly saves customers' electricity bills, so efficiency is a very important factor.