mc3302 comparator

[lostad]

Hi everyone,

I was trying to compare triangular wave and sine wave to get pwm but mc3302 did not work. If i connect triangular wave to comparator triangular wave shape is dissapearing. Can anyone tell me what am I missing ?

[Tien_P]

Hi,

I think the MC3302 is used to compare with a reference voltage level and since you are comparing two AC signals this part won't work.

In the attached circuit I replaced the comparator with the first differential opamp I found in the db.