source:Industry News Popular:adapter release time:2021-12-25 09:48:44 Article author:sznbone
Switching power supply:
Switching power supply is a method of turning 220V voltage into low voltage DC, which is different from traditional power frequency transformers. Power supplies that use this switching voltage conversion technology are called switching power supplies, and chargers and power adapters are currently using switching power supply technology. At present, the switching power supply is widely used in almost all electronic equipment due to its small size, light weight and high efficiency. It is an indispensable power supply method for the rapid development of today's electronic information industry.
In addition, the development and application of switching power supplies are of great significance in saving energy, saving resources and protecting the environment. The power electronic devices used in switching power supplies are mainly diodes and IGBTs (insulated gate bipolar transistors). There are a small number of applications in switching power supply input rectifier circuits and soft-start circuits. GTR is difficult to drive and the switching frequency is low. It is gradually replaced by IGBTs and MOSFETs.
Power Adapter:
The power adapter is a power supply conversion device for small portable electronic equipment and electronic appliances. It is generally composed of a shell, a power transformer and a rectifier circuit. According to its output type, it can be divided into AC output type and DC output type; according to the connection method, it can be divided into wall plug And desktop. It is widely used in language repeaters, walkmans, notebook computers and other equipment. Generally, the power adapter can be used not only for power supply, but also for charging an electrical appliance. Just like the power adapter of a notebook, it can charge and power the computer. For example, the power adapter for LCD monitors and the power adapter for printers.
The power adapter of most notebook computers can automatically detect 100～240V alternating current (50/60Hz). Basically all notebook computers have an external power supply and connect to the host with a cable, which can reduce the size and weight of the host. Only a few models have the power supply built in the host. There is a nameplate on the power adapter, which indicates the power, input and output voltage and current and other indicators.
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