[kicad-users] Kicad question about parts 'pad not connected' in pcbnew

2007-10-16 Thread fonesrc
Hello,

I'm new user of Kicad (yesterday) and i have a little problem with the
netlist after the creation of the schematic with eeschema.

See my schematic plan : http://f1src.free.fr/divers/pilotage.sch

When i pass in the pcbnew and i open the netlist (generate without
error) the Q2 and Q5 is not connected (only this parts).

I hope you have understand my problem, because my english is not very
good. 

Have a nice day
Michel



[kicad-users] +VCC and -VCC

2007-10-16 Thread jeremy
VCC is there in powers

I can't find -VCC in Powers.

Can I make one somehow?

Thank you!


Re: [kicad-users] +VCC and -VCC

2007-10-16 Thread Hristo Antonov
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 !




Re: [kicad-users] +VCC and -VCC

2007-10-16 Thread Robert
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
 
 
 
 
 


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