PCB News - Common problems in circuit diagram design

Question 1: How to set the default part package of common parts?

Answer: You can use the part library editor to open the part to be modified, and enter the part package name in part foot print 1 in the designator tab of the part description dialog box. This part package name is the default part package of the part.

Question 2: How to directly replace parts?

Answer: Double-click on the part to be replaced, enter the new part description in lib ref in the part properties dialog box that pops up, and click the ok button to complete the direct replacement of the part.

Question 3: What is the difference between part description and part identification?

Answer: The part description (library reference) is the name of the part in the parts library. It takes a common name for the parts with the same shape and pin function; the part identification is the name designed by the user according to the needs in the circuit diagram. Of course, it cannot be random. Pick. Under normal circumstances, they can be collectively referred to as part names without subdividing them.

Question 4: What are the part fields and read only fields in the part properties dialog box?

Answer: The part fields in the part properties dialog box have two functions. For general parts, you can mark the parameters of the parts in these settings; for simulated parts, you can set the simulation model parameters in these settings. Read only fields are generally used for the definition of simulation models in simulated parts.

Question 5: What should I do if the system cannot recognize the parts library?

Answer: The system cannot recognize the parts library. You can try the following solutions: reinstall the printer driver. If there is no printer, you can install a printer driver at will; sometimes after installing some software, the system may not recognize the parts library. In that case, you can reinstall the protel program.

Question 6: How to modify the properties of parts in batches?

Answer: Click the globe button in the part properties dialog box, you can set the overall modification options in the overall modification dialog box, and enter the replacement settings in the copy attributes. For example, {a*=b*}, the identifier beginning with a should be Identification symbols beginning with b.

Question 7: How to switch directly from schematic diagram to PCB design?

Answer: Click the menu design\update PCB command to realize the automatic switch from schematic diagram to PCB design. But pay attention to open the PCB diagram that needs to be switched, and close other irrelevant PCB diagrams, otherwise unexpected problems will occur.

Question 8: What should I do if the schematic cannot be printed?

Answer: The schematic can’t be printed. You can solve it as follows: modify the default printer; check whether the printer's paper settings are appropriate; the printer is not compatible.

The above is an introduction to common problems in circuit diagram design. Ipcb is also provided to PCB manufacturers and PCB manufacturing technology.