Hi,
Can you have a logic level circuit that has one voltage, only, but two states, depending on the polarity of the current instead of if the voltage is low or high.
I ask this out of curiousity because diodes help prevent the backflow of electrons,
so therefore I assume that you can deliberatley cause the current to backflow if you wanted to use it to represent two states (I/0) as opposed to having circuitry that changes the voltage itself.
I know that
wikipedia says the following: " Logic levels are usually represented by the
voltage difference between the signal and
ground, although other standards exist. "
Maybe it's just talking about active high or active low representation.
I have no idea if this would even be useful or not
but I don't think what i'm talking about is the same thing as relay logic.
PS, I've been away from ETO a while but I'm back.
Regards, Tt