I'm trying to design a cmos inverter on pspice (just started using it this week) but I'm not quite getting the correct waveform. Below pictures shows my schematic and output graph. What am i doing wrong here?

 

What is wrong about the wave form? The fact that it's going to negative 5 volts and there is no such supply voltage?

 

Yes, I expect it to switch from 0 to 5v.

 

Put your V- probe be on the ground rail.

 

When the voltage on the input node is 0V and the voltage on the output node is 5V, what is (Vout - Vin) equal to?

When the voltage on the input node is +5V and the voltage on the output node is 0V, what is (Vout - Vin) equal to?

 

I agree with Alex_t....

 

Alex_t's suggestion certainly solves the problem. I'm just trying to get the TS to understand WHY they are seeing what they are seeing.

 

use pulse of
v1=0
v2=5v
td=0
tr=0
tf=0
pw=0.5m
per=2m

 

use pulse of
v1=0
v2=5v
td=0
tr=0
tf=0
pw=0.5m
per=2m

How will that help?

Having 0 rise and fall times can cause problems for the simulator. But even if it doesn't, how does this help answer the TS's question?

 

How will that help?

Having 0 rise and fall times can cause problems for the simulator. But even if it doesn't, how does this help answer the TS's question?

i just tried @WBahn in pspice 9.2 student version

 

i just tried @WBahn in pspice 9.2 student version

So? Again, how does that help the TS solve their problem. Their simulation was running fine. They were just having trouble understanding the values it was producing.

 

It was resolved. I probe should have placed at gnd. You notice i placed V- at the 5V source. Thanks everyone for your contributions and clarifications.