Comparator circuit with +/-5v saturates to +4v and -2v. How can I make this -2v at least -4v.
A schematic would be helpful.Comparator circuit with +/-5v saturates to +4v and -2v. How can I make this -2v at least -4v.
What you are describing sounds like it has more to do with what comparator IC you are using- which you also didn't tell us. Read the datasheet and UNDERSTAND it. We can't answer anything without more details.Comparator circuit with +/-5v saturates to +4v and -2v. How can I make this -2v at least -4v.
You can't. LM741 can't swing that close to the rails. For lightly loaded outputs, guaranteed output voltage swing is 4V from the rails.It's output saturation voltages are 9 and -7 Instead of 9 and -9. How do I fix this problem?
I know the lm741 is not a great IC but I want to use it.
Can you find any justification from any source that suggests that what you want to do is even possible? You can try looking at a modern part if you want to get closer to the supply rails but getting all the way there may still be out of reach. The datasheet will tell how close to perfection you can get. Learn to read them instead of assuming you can do whatever you want.I am trying to use lm741 IC as a comparator.
+/- 10V is my supply to the rails. It's output saturation voltages are 9 and -7 Instead of 9 and -9. How do I fix this problem?
I know the lm741 is not a great IC but I want to use it.
Very bold of you to assume I'm ignorant.Can you find any justification from any source that suggests that what you want to do is even possible? You can try looking at a modern part if you want to get closer to the supply rails but getting all the way there may still be out of reach. The datasheet will tell how close to perfection you can get. Learn to read them instead of assuming you can do whatever you want.
Ignorance was not my assumption at all. You asked a question that has an answer you don't want to hear. I'm assuming that you had some justification for your expectations, and I wanted to know what they were. I tried to offer some helpful suggestions to get you closer to your goal which you appear to have dismissed out of hand.Very bold of you to assume I'm ignorant.
I did read the datasheet and run tests on the IC. If you have nothing to say it won't hurt you to say nothing.
Then you apparently didn't understand it, since nothing in there suggests the output would be ±9 volts with ±10V supplies.I did read the datasheet
Shocked Picachu face, that the world does not work according to a particular set of expectations.Then you apparently didn't understand it, since nothing in there suggests the output would be ±9 volts with ±10V supplies.
So if that's not ignorance (lack of knowledge or information), then what do you call it?
I suspect the threads are related because he is NOT getting the answer that he wants, and maybe he thinks asking the question differently will produce a different result. This is not an infrequent occurrence among those with double digit post counts.In his other thread he is using a 54 years old lousy LM741 opamp, not a comparator.
I was not aware we were discussing personalities which is not quite the same thing as managing expectations. Your mileage may vary.Please, let us not bring this thread down to the level of discussing personalities.
Okay, but I think ignorance is a state-of-knowledge, not a personality trait.Please, let us not bring this thread down to the level of discussing personalities.
by Jake Hertz
by Duane Benson