Double-sided circuit board

　　Double-Sided Boards have wiring on both sides. However, in order to use the wires on both sides, there must be a proper circuit connection between the two sides. This "bridge" between circuits is called a pilot hole (via). A pilot hole is a small hole filled with or coated with metal on the PCB, which can be connected with wires on both sides. Because the area of the dual panel is twice as large as that of the single panel, and because the wiring can be interlaced (can be wound around the other side), it is more suitable for use in more complex circuits than the single panel.

　　Strictly speaking, double panel is a very important PCB board in the circuit board, its use is very simple to see whether a PCB board is double panel, I believe that friends' understanding of the single panel is completely able to grasp, double panel is an extension of the single panel, meaning that the single panel line is not enough to turn to the opposite, Another important feature of the dual panel is the through hole. To put it simply, there are two sides of the line, both sides of the line! A summary is: double-sided line board is double panel! Some friends will ask, for example, a board with two sides of the line, but only one side has electronic parts, such a board in the end is a double panel or a single panel? The answer is obvious, such a board is a double panel, but the plate of the double panel is installed with parts