Vesa, On Fri, 06 Aug 2010, Vesa Solonen wrote: > > I'm waiting eagerly to test your improvements on PCBnew, also the EM > fied modeling is very interesting. Do you know Qucs? Qucs project may be > of value for sharing the implementation and ideas. IIRC Qucs-KiCad > cooperation was discussed on the list a while ago.
The modelling uses the approximate equations that everone says don't rely on. I just wanted to have the program perform the approximate calculations (differential impedance, delay, bussing NEXT and FEXT, etc.) to make it so that one does not have to bounce back and forth from a FEM modeller. I have tried to capture sufficient information that one could write an export to qucs or some of the freely available FEM tools that can do 2.5 or even 3D EM. I'm pushing 2.5Gbps in my current board design and would like to bounce up to 10Gbps and 40Gpbs in my next two. I'm trying to get power consuption and distribution as well as some thermal modelling in as well. Unfortunately most of this is not best handled from PCBNEW alone but I'm having a time biting PCBNEW off without tackling EESCHEMA. It would be good it the component library in EESCHEMA could assign maximum current sink into a power pin. Assigning junction conductivity to footprints with, say, cvpcb would be nice too. Otherwise all of this stuff needs to be plugged into PCBNEW separately (as with netclasses). --brian -- Brian F. G. Bidulock ¦ The reasonable man adapts himself to the ¦ [email protected] ¦ world; the unreasonable one persists in ¦ http://www.openss7.org/ ¦ trying to adapt the world to himself. ¦ ¦ Therefore all progress depends on the ¦ ¦ unreasonable man. -- George Bernard Shaw ¦ _______________________________________________ Mailing list: https://launchpad.net/~kicad-developers Post to : [email protected] Unsubscribe : https://launchpad.net/~kicad-developers More help : https://help.launchpad.net/ListHelp
