I need some help with comparators.
Upfront I apologize if this seems like a dumb question, but both Instructables and google have turned up nothing useful for me.
I have a need for a resistance comparing switch circuit. I can't find anything about resistance comparators anywhere except articles that you have to pay to read.
I need something that will compare a set resistance to a resistance that will vary, I want it to switch off when the tested resistance is higher then the set one and off when its the reverse. I have no clue what to do.