generating square wave from comparator

[Hashimeng]

Hello every1,

I am trying to get square wave from comparator using pspice. i put Vpulse to the (+ve) and Vsin to (-ve). the comparator am using is opamp.

but the simulation doesn't work!! i dunnno ??

 

[ericgibbs]

hi,
Are you trying to change a sine wave into a square wave using a comparator.??

 

[Hashimeng]

my aim is to implement pwm inverter. but first i want to drive the gate for igbt transistor. so to control the On and Off am using comparator ( either opamp or LM111)

 

[alec_t]

Why do you have a sine-wave input?

 

[Hashimeng]

because later on the pwm concept is to to get shape of sine wave out put every time the sine wave intersect with triangle wave. it is my first time dealing with proper electronic project.