generating square wave from comparator

H

Hashimeng

New Member

• Nov 24, 2011

• #1

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

Well-Known Member

Most Helpful Member

• Nov 24, 2011

• #2

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

 

H

Hashimeng

New Member

• Nov 24, 2011

• #3

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

Well-Known Member

Most Helpful Member

• Nov 24, 2011

• #4

Why do you have a sine-wave input?

 

H

Hashimeng

New Member

• Nov 24, 2011

• #5

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.