It is the responsibility of the PCB engineer to propose design rules, but after receiving the input sequence, the following steps are general steps to be considered for wiring design:
1. First of all, it is necessary to preliminarily approve the provisions of sketch input, component list and special circuits. It includes a comparison of data with the physical limitations of the printed board, which in turn are related to the effective board area provided.2. To verify the relationship between the original and the circuit, the necessity of short-circuit interconnection, heat sink, ground, voltage connection, and special width requirements of the wire.
3. Then review the interconnection of the signal input and output of the plug and socket to make it consistent with the structure of the logic flow, because the structure of the logic flow involves the design of each interface.4. The special standards of some circuit board companies relate to the requirements for automatic insertion of components, matrix positioning parameters of components, mechanical hardware, and usage of plugs and sockets, which are considered to have an impact on the design. Since most of the above steps are mental work, the actual manual wiring procedure is done by the designer.
5. The design and wiring is based on the grid of polyester film under the designer's design drawings as a reference.
6. The printed board with standard size can be preprinted on the polyester film with the structural components of the photographic base map of the printed board, so that all special regulations and standards become part of the sketch map of the photographic base map.
In these steps, the method of quickly arranging the components repeatedly will gradually make the design more and more accurate. For the most complicated wiring, the circuit board factory recommends that these steps be repeated at least three times or more, and each step is regarded as the basis for the next step. In short, each step cannot be a completely isolated step.
