Hello guys,

I want to design a kind of switch with 5V input and 5V output. If input is below or above 5V, circuit should provide 12V output.

Thanks,

 

Hello guys,

I want to design a kind of switch with 5V input and 5V output. If input is below or above 5V, circuit should provide 12V output.

Thanks,

Doesn’t that mean that it provides a 12V output all the time?

 

Lets say input should stay between 4.5V and 5.5V, in that case output must be 5V but if input gets below 4.5V or above 5.5V, output must be 12V.

 

Welcome to AAC.

Could you please describe the problem this circuit is supposed to solve? Without some idea of application this thread is going to turn into a guessing game and the help you get won’t be very good.

Understending why you want this will fill in a lot of things you would never think of to tell us umprompted.

 

"Y" is right: tell us the problem to be solved instead of asking us how to implement what you have decided is the solution.
In addition, that is a rather nebulous description of the system.

 

LM311 comparator

 

It will take more than a single comparator to detect above and below some limit. And still, until the actual project is explained along with the more detailed requirements there is no reason to spend time on guesses.
I am not trying to be hostile, but trying to solve an undefined problem is not what I do.

 

It will take more than a single comparator to detect above and below some limit. And still, until the actual project is explained along with the more detailed requirements there is no reason to spend time on guesses.

I used one, plus a couple more components in order to regulate the field of a 50HP DC generator!

 

Certainly a window comparator using two comparators could perform that function, but the reason for that function is a puzzle.

 

If you derive the 5V supply from a higher voltage supply using a switched-mode IC such as LMR38010, then it will provide you with a "power good" output which does (almost) what you need.