Any EE's used OrCad Capture/PSpice?

[jmcoreymv]

I made this really simple circuit in capture to test out the program and when I go to simulate it in PSpice, it tells me that all the nodes are 'floating'. I made sure that everything is connected and that the circuit has a ground. Any ideas?

 

[Shockwave]

I've seen the interface, and thats about it. As a way the hell out there long shot, maybe your using floating grounds and not earth grounds?

 

[NutBucket]

You may have used the wrong symbol for ground/reference node.

 

[jmcoreymv]

Theres like 10 to choose from, do u know which is right? Its just a simple dc circuit with a few dc voltage sources.

 

[who8myrice]

if you send me the .out file maybe i can help

 

[Ameesh]

i used pspice but i am a cs grad

nut buckect is probably right

 

[Ameesh]

i believe it looks like
a V made up of horizonbtal stripes


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[NutBucket]

I believe the symbol to use has three horizontal lines, triangle shape and "0" next to it.

 

[jmcoreymv]

Heres the out file


*Libraries:
* Local Libraries :
* From [PSPICE NETLIST] section of pspice91.ini file:
.lib "nom.lib"

*Analysis directives:
.TRAN 0 1000ns 0
.PROBE
.INC "test-SCHEMATIC1.net"


**** INCLUDING test-SCHEMATIC1.net ****
* source TEST
R_R1 N00310 N00274 2
R_R2 GND_POWER N00310 5
R_R3 N00305 N00310 1
R_R4 N00280 N00305 4
V_V1 N00274 N00280 DC 6Vdc AC 1Vac
V_V2 N00280 GND_POWER DC 12Vdc AC 1Vac
I_I1 GND_POWER N00305 DC 3Adc AC 1Aac

**** RESUMING test-schematic1-test.sim.cir ****
.INC "test-SCHEMATIC1.als"



**** INCLUDING test-SCHEMATIC1.als ****
.ALIASES
R_R1 R1(1=N00310 2=N00274 )
R_R2 R2(1=GND_POWER 2=N00310 )
R_R3 R3(1=N00305 2=N00310 )
R_R4 R4(1=N00280 2=N00305 )
V_V1 V1(+=N00274 -=N00280 )
V_V2 V2(+=N00280 -=GND_POWER )
I_I1 I1(+=GND_POWER -=N00305 )
_ _(GND_POWER=GND_POWER)
_ _(GND_POWER=GND_POWER)
.ENDALIASES

**** RESUMING test-schematic1-test.sim.cir ****
.END

ERROR -- Node N00310 is floating
ERROR -- Node N00274 is floating
ERROR -- Node GND_POWER is floating
ERROR -- Node N00305 is floating
ERROR -- Node N00280 is floating

 

[NutBucket]

Ok, in my copy of OrCAD (older), its in the Source library simply as "0".

 

[jmcoreymv]

Awesome thanks guys! I tried the one with the 0.

 

[NutBucket]

 

[jmcoreymv]

One more question, I added a current controlled current source so my circuit and I cant figure out how to set it to different ratios. Like lets say my controlling current is Io and I want the dependent current source to spit out 2Io, I cant figure out where to set it to 2x.

 

[Stojakapimp]

try double clicking on the CCCS and check for the properties in there. You should find it somewhere in there

 

[jmcoreymv]

When I double clicked on the part, the only property that seemed like it might be what im looking for is 'gain'. But it was locked at 1 and wouldnt let me change it.

 

[MaxFusion16]

yea i remember having that problem, u need ground, check if you used the right ground symbol.

 

[Stojakapimp]

are you clicking on the actual part or on the number by the part? if you double click on the CCCS itself, you should get another window that has a lot of properties

 

[jmcoreymv]

I think I got a bit farther, I replaced the CCCS (part G) with a CCCS (part GPoly) which lets me set the coefficient, although it still isnt doubling, its just making one negative and one positive.

 

[helpme]

Shift+G (Place Ground)
pick 0/Source (Looks like ground symbol with a 0 next to it).

 

[DanTMWTMP]

you have to choose the 0 ground.

triangle w/ a zero next to it. Any other ground and you'll get that error....
....
to get that part, you have to go part list, and it's in the source library...this is for the free downloadable version...sometimes, it's also in the ground button, except browse for it in the source library

 

[TuxDave]

Wow.. you actually use the graphical interface? I prefer text entry. It wins in the area that you don't have to watch your wiring, but little pain in the butt when you need to duplicate many blocks.

 

[DanTMWTMP]

Originally posted by: TuxDave
Wow.. you actually use the graphical interface? I prefer text entry. It wins in the area that you don't have to watch your wiring, but little pain in the butt when you need to duplicate many blocks.

woa there's a text entry?!?!!!!!

I ALWAYS GET STPUID ERRORS WHERE I DIDN'T PUT LIKE 1 pixel worth of wire on the screen ....ugh.....especially on larger circuits.....


well, for duplicating, can't you just copy paste?....errr...hehehe....