I've been trying to get a grip on op amps and I can't find anything online that's very helpful. Can some one give me a good explanation, or point me to a website that has a good explanation(with examples). I don't really want to know the math right, know just what they are good for and how to use them.
Also to use an op amp do you have to have a negative power supply? Like just a standard wall wart won't work?
Also to use an op amp do you have to have a negative power supply? Like just a standard wall wart won't work?