The function of the electronic circuit board is to fix various components, and then use wires to connect them according to the circuit. There are two common methods for internal production of electronic circuit boards. Here are some introductions.

1. Rivet circuit board
On the 1.5-2mm thick insulating board (generally epoxy glass fiber board, glue board, etc.), drill small holes with a diameter slightly larger than the copper rivets according to the device requirements of the component, so that the copper rivets can be inserted exactly. Then use a punch and a hammer to rivet the copper rivet into the hole. The components are soldered on the rivets, and the corresponding points are connected into a circuit according to the circuit requirements with wires. This kind of circuit board is characterized by simple manufacture, and a circuit board can be repeatedly disassembled and assembled for various experiments. The disadvantage is that the circuit board cannot be made compact, so it is gradually replaced by another kind of circuit board, namely the printed circuit board.

2. Printed circuit board
The biggest feature of printed circuit boards is that the assembled components are compact, beautiful, and suitable for mass production in factories. Of course, it is also suitable for various electronic small productions.
The substrate of this circuit board is made of epoxy board or paper board. A thin layer of copper foil is pasted on the substrate by hot pressing. Print the circuit on the copper foil with the printing method, and then remove the unnecessary copper foil with the etching method. The remaining copper foil forms the circuit. Finally, small holes are drilled, and the flux protection agent is applied to make the circuit board. Up.