I am using a breadboard power supply that hooks into both power rails and has selectable 5v or 12v power. I have it mounted near the top of my breadboard and am constructing circuits near the bottom and am getting all kinds of strange circuit behavior. By plugging the power supply closer these problems go away. I threw away two 555s last night thinking they were broken since my 555 test circuit wasn't working properly.
Why does 4 inches of distance make such a problem?
Why does 4 inches of distance make such a problem?