I am pretty new to electronics and was wondering how you could get a NOT gate for a 9v battery. I understand that it can not make power at the output when there is no power input, so it would probably require multiple inputs. I was basically thinking something like this: Two inputs, A and B One output, C
Input A is always on to give power, and output C Is the opposite of input B.
It seems simple, I just have no idea what this is called, or where you can buy it, do you guys have any ideas?
Edit: Basically I want to connect input A and B from a 9V battery to a device, and I want output C to be the opposite of B, meaning that if I cut the wire between the battery and input B, the output will turn on, getting it's power from input A which is still connected.
Opposite as in on will be off
I do not know much about electronics, so sorry if it is not very specific. Just tell me if you want more clarification.