Why is the laptop power adapter look so big?
The shape of the adapter is of course to stabilize the voltage, the large voltage into a small voltage, as to why the adapter can stabilize the buck, you can query the relevant knowledge. And three trunks that play the role of security protection. You can go to Baidu look, learn what is FireWire What is the zero line what is the ground line. These are secondary school knowledge.
Is to stabilize the voltage, protect the computer circuit why not rough? Do not you see the input and output lines are not the same? Which rough some of you can move the brain, three feet of the plug is used to do what, I suggest you Baidu look.
According to the working principle of the power adapter, you can know:
1: need a transformer, in order to stabilize the voltage, so there are specifications (the size can not be too small)
2: need a large capacitor discharge, to ensure that large voltage will not breakdown circuit components
3: need circuit board, and voltage regulator integrated circuit, or power amplifier tube, the current amplification.
Notebook in order to pursue the volume, performance, only the power into the outside.
If integrated into the notebook inside, may heat overheating, resulting in burning.
