I finally got it! I removed the AC power source since this is an oscillator, not a square wave inverter. I changed the DC voltage to 15 V and added a -15 V source to the pin 4. Works perfectly. Thanks.
I just don't get it. Every website that tells about square wave generators have these kind of pictures:
Where's the input signal? I even tried this but:
http://img117.imageshack.us/img117/4063/oscqp1.png
So the input signal should be 5V? And I even tried removing the capacitor, but it didn't seem to have any effect in the output signal.
I would really appreciate it if someone could even show me the right direction to go from here.
Homework Statement
The assignment is to create a square wave oscillator using an op-amp in Multisim. The wave's frequency should be 1 kHz and the duty cycle 60%.
Homework Equations
f = 1 / (R*C)
R1 < R
R1 < Rf
I guess.
The Attempt at a Solution
Here's what I've done...