The power adapter can be said that this is a very important in the field of power in a landmark product, through such a device, people can make use of different appliances in time to be able to get to the most appropriate voltage as a power. And this further ensures the safe use of electrical appliances and long service life.
The power adapter makes many products successfully enter the people's home, the user's hands, in the home voltage fixed environment, to the needs of people to bring service and convenience.
As everyone knows, the power adapter is composed of two parts which are connected, while the other side is the power adapter, power line plug and laptop power adapter connecting hole, when the fault occurs, sometimes we only change the part of it, without changing the connecting hole side.
There are two kinds of power adapter: one is switching mode power supply, the other is transformer type power supply. Switching power supply circuit is more complex, more components, is a new type of power supply. The latter is a very common power supply, the components are relatively simple, mainly step-down transformer, rectifier diodes, filter capacitors, etc., there are high-end compared to the voltage regulator protection circuit.