The web page you refer to is correct, but I think you've misunderstood it. The ee in Vee refers to a BJT emitter, which is connected to ground in some way with an NPN common emitter circuit. Many BJT circuits use a NPN/PNP arrangement symmetrical about ground, giving you a Vcc, a -Vcc, and ground (sort of Vee). In theory you can also have a PNP only circuit, giving -Vcc and Vee, though that's very unusual these days.
Regards, Robert. Hristo Antonov wrote: > On Tue, 2007-10-16 at 21:50 +1000, jeremy wrote: >> VCC is there in "powers" >> >> I can't find -VCC in "Powers." >> >> Can I make one somehow? >> >> Thank you! >> >> > Please do not ;) > The "opposite" of Vcc is not -Vcc . It is Vee ! > Look here > http://encyclobeamia.solarbotics.net/articles/vxx.html > > -Vcc is used for better explanation only. It means that Vee is same as > Vcc and it is with opposite polarity . > > Good luck ! > > > > > Please read the Kicad FAQ in the group files section before posting your > question. > Please post your bug reports here. They will be picked up by the creator of > Kicad. > Please visit http://www.kicadlib.org for details of how to contribute your > symbols/modules to the kicad library. > For building Kicad from source and other development questions visit the > kicad-devel group at http://groups.yahoo.com/group/kicad-devel > Yahoo! Groups Links > > > > > -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.488 / Virus Database: 269.14.12/1072 - Release Date: 10/15/2007 17:55
