This has been burning in the back of my mind for quite some time, and I've not been able to come up with an obvious/simple answer.
What is the difference between something being described as voltage controlled as opposed to current controlled? I.E. FET's(voltage controlled) - vs - BJT's(current controlled). If current and voltage are directly proportional to each other (given a constant resistance)why is one device described one way and the other another way? It seems that you could always use voltage (or current) to describe either device and come up with the same calculations. Is it because the resistance of the device is variable that one is used instead of the other? I refer to the transistors, but I've heard of other devices described as current controlled or voltage controlled too. What makes this distinction?
Thanks in advance for any input.