2021-09-15

Common design rules for circuit boards

PCB design is a very complex job with many rules. However, there are some common design rules. If you get the hang of it, you can do the job well. Let the engineer elaborate on the common design rules for PCB circuit boards:

2021-09-15

Why do PCB boards need detection points?

For those who learn electronics, it is a matter of course to set up test points on the circuit board, but for those who learn mechanics, what are the test points?

2021-09-15

Detailed explanation of the production and processing process of PCB circuit boards in the factory

The copper foil substrate is cut to the size suitable for processing and production. Before the film is laminated, the copper foil on the board usually needs to be roughened by brushing, micro-etching, etc., and then the dry film photoresist is adhered to it at a suitable temperature and pressure. The substrate with the dry film photoresist is sent to the UV exposure machine for exposure. When the light-transmitting area of ​​the negative film is irradiated by ultraviolet radiation, the photoresist will polymerize, and the line pattern on the negative film will be moved to the dry film on the flat surface. photoresist. After tearing the protective film on the surface of the protective film, first use a sodium carbonate aqueous solution to develop and remove the opaque part on the film surface, and then use a hydrogen peroxide mixed solution to remove the exposed copper foil corrosion to form a line. Finally, the dry film photoresist is washed off again with an aqueous solution of lightly oxidized sodium.

2021-09-15

In-depth understanding of the working principle and composition of the circuit board

The circuit board can be called a printed circuit board or a printed circuit board. The English name is (Printed Circuit Board) PCB, (Flexible Printed Circuit board) FPC circuit board (FPC circuit board is also called flexible circuit board). It is a highly reliable and excellent flexible printed circuit board made of polyester film as the base material. The names of the circuit boards are: ceramic circuit board, alumina ceramic circuit board, aluminum nitride ceramic circuit board, Circuit boards, PCB boards, aluminum substrates, high frequency boards, thick copper boards, impedance boards, PCBs, ultra-thin circuit boards, ultra-thin circuit boards, printed (copper etching technology) circuit boards, etc.

2021-09-15

What do the letters on the circuit board mean?

LAMP, C stands for capacitor; thirdly, D stands for diode, and the four digits represent the serial number of the same device on the circuit board; the second is a number, such as "1" representing various symbols on the motherboard circuit board. Meaning: resistance on the motherboard, in general, the first letter identifies the device category: transformer on the motherboard, "2" means power circuit, etc.: transistor: emitter, which is determined by the circuit designer, The serial number is 17,C).

2021-09-15

Common design rules for PCBs

PCB design is a very complex job with many rules. However, there are some common design rules. If you get the hang of it, you can do the job well. Let the engineer elaborate on the common design rules for PCB circuit boards: