- #1
stn0091
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Homework Statement
I'm trying to simulate the following circuit in OrCAD PSPICE.
Homework Equations
The Attempt at a Solution
* 8.20
Vdd 1 0 5V
MP1 3 2 1 1 PMOD
MN1 3 2 0 0 NMOD
MP2 4 3 1 1 PMOD
MN2 4 3 0 0 NMOD
R1 3 2 1000
C1 2 4 1uF
.MODEL NMOD NMOS (VTO=2)
.MODEL PMOD PMOS (VTO=-2.0)
.ic v(2)=5
.tran 0.5us 10ms 0 1u uic
.PROBE
.END
Resistor and capacitor values were chosen for some arbitrary time constant. I just wanted to see the waveforms at Va, Vo and Vi.
V(2) corresponds to the gates of the first CMOS and I set that to 5V to "start" the circuit. However, I'm not seeing any oscillations when I simulate the circuit.