Switch Power Supply
Switch power supply is a high-frequency power conversion device, but also a power supply. Switching power supplies can also be referred to as switch mode power supply, switching converters and switching power supplies. Its function is to convert the level voltage into the voltage or current required by the client through different forms of architecture. The input of the switching power supply is mostly AC power supply or DC power supply, and the output is mostly a device that requires DC power supply. The switching power supply converts voltage and current between the two.
Working principle of switching power supply
The working principle of the switching power supply is to make the power transistor work in the on-off and off-off states, in these two states, the voltammetry added to the power transistor is very small (in the on-off, low voltage, large current; When turned off, the high voltage (low current)/volt-ampere product on the power device is the loss generated on the power semiconductor device. Switching power supplies can be divided into AC/DC and DC/DC two categories.
Switching power supply work to meet the three conditions, first of all, the power electronic device work in the switching state, followed by the power electronic device work at high frequency rather than close to the low frequency of the power frequency, and finally the switching power output must be DC, not output AC.
Advantages of switching power supply
The high conversion efficiency of the switching power supply is one of its main advantages, and because the switching power supply has a high operating frequency, a small volume and light weight transformer can be used, so the switching power supply will also be smaller and lighter than the linear power supply. The following are several advantages of switching power supplies, including but not limited to these:
(1) Small size, light weight: because there is no power frequency transformer, the volume and weight is only 20 to 30% of the linear power supply.
(2) Low power consumption, high efficiency: the power transistor works in the switching state, so the power consumption on the transistor is small, the conversion efficiency is high, generally 60 to 70%, and the linear power supply is only 30 to 40%.
(3) Simple structure, high reliability: easy maintenance, current ripple rate can be easily achieved relatively low.
Use of switching power supply
Switching power supply products are widely used in industrial automation control, military equipment, scientific research equipment, LED lighting, industrial control equipment, communication equipment, power equipment, Ultra Thin Switch Power Supply , instrumentation, medical equipment, semiconductor refrigeration, air purifier, electronic refrigerator, liquid crystal display, LED lamps, communication equipment, audiovisual products, security monitoring, LED lamp belt, computer chassis, digital Products and instruments, etc.
KELIC was established more than 20 years ago, specializing in the development and production of AC/DC Power Adapter, Battery Charger and Industrial Power Supply. Our commitment to quality and customer satisfaction has helped us build a good reputation in the international market.