PCB wiring question

lym1210

PCB wiring question [Copy link]

 

I have a question for you seniors. Does the wiring on the PCB board have to be done according to the connection of the flying wire? Can I connect it according to my own ideas instead of following the flying wire?

topwon

Do you mean the connection order or connecting different networks? The connection order of the same network needs to be adjusted based on experience. Changing the network means changing the schematic design.

qwqwqw2088

Protel 99se can indeed manually add network names, and customize network terminal numbers. Circuits with few components can do this without drawing a schematic diagram, and can directly use the PCB diagram.

qwqwqw2088

The best way to design a circuit now is to start with the schematic diagram, which is less prone to errors and allows designers to focus on the correctness of the circuit schematic diagram.

lym1210

topwon posted on 2018-9-25 16:09 Do you mean the connection order or connecting different networks? The connection order of the same network needs to be adjusted according to experience. Changing the network means changing the principle...

Maybe what I said is a bit vague. Suppose the power supply is connected in parallel with two capacitors and connected to the pins of the chip on the schematic diagram. Maybe due to the layout, the flying wire shows that the power supply is directly connected to the chip. What I mean is, when I connect the wires, can I connect the power supply to the capacitor first and then to the chip instead of following the flying wire display?

topwon

lym1210 posted on 2018-9-25 16:35 Maybe what I said is a bit vague. Assuming that the power supply is connected in parallel with two capacitors and connected to the pins of the chip on the schematic diagram, the flying wire may show the power due to the layout...

This is what I said. The connection order of the same network needs to be adjusted according to experience. You can choose which pin to connect to first. The flying wire is just a schematic diagram. The software itself does not know the requirements of the signal flow direction.

szxj5790

Do you mean the connection order or connecting different networks? The connection order of the same network needs to be adjusted based on experience. Changing the network means changing the schematic design.

topwon

On the schematic diagram, the power supply is connected in parallel with two capacitors and connected to the pins of the chip. When I connect the wires, can I connect the power supply to the capacitor first and then to the chip instead of following the flying wires? - Your question is about the connection order of the same network.

懒猫爱飞

It is better to follow the schematic diagram to determine the direction. After all, a quality schematic diagram takes into account the flow of signals, and the placement of components can also be roughly felt.

ienglgge

The software will only tell you which networks need to be connected. It cannot tell you the order of connection. You need to analyze it yourself. Accumulate experience. Determine the order according to the signal flow. You can look at the basic rules.

Syber

Well, you can modify it in the schematic. After modification, call the netlist. Then you can connect it according to the flying wires.