National security mathematical set-top box how to connect old-fashioned TV
Depends on the size of the current, if the line is very small, will soon be burned, not the fire, if not burned on the dangerous.
Large line width is mainly used to take the main role, so the power cord as wide as possible. But the signal line is not necessary, because the line width means that will increase the PCB area, to know the cost of the board and the area is proportional.
