kinarfi
Well-Known Member
I have always thought that a comparator, LM339 /LM393), switched states when in+ and in- were equal or very near equal, spec sheet says 5 mv, yet when I create a sawtooth wave, 5oKhz, 3v to 7 v, and compare it to a rising voltage, 3 to 7, the output voltage of the LM393 is 0v, no switching, until the difference is around 736mv and full on, 14, no switching, while the difference is still 1.17 between in- and in +.
Is this normal or have it messed up something in my sim? or is it different on the bench, got go see!
Thanks,
Jeff
PS My concern is I was planning on using this for PWM of a motor.
Is this normal or have it messed up something in my sim? or is it different on the bench, got go see!
Thanks,
Jeff
PS My concern is I was planning on using this for PWM of a motor.