I still refuse to follow the pack and think of current flow in solid state devices as from "+" to "-". For instance, I see current flow in an NPN transistor as from emitter to collector: a heretical position to the purists of the concept. And think about the terms emitter (puts out) and collector (gathers in)!
And while I think I understand the
why of that convention ("hole theory" and all) I am, nonetheless, convinced the theory was postulated to account for the need to make the math of solid state physics work: it needed a negative multiplier for the math to give a positive, and therefore accurate, solution.
This was accomplished by introducing into said math the infamous "
i ", or
imaginary number (the square root of -1, for which, of course, there is no answer
but if squared yields -1: the negative multiplier). I think that if you check, the
i symbol is
never alone in a formula but is
always, eventually multiplied by
another i to force a -1 result.
Not that what I think matters. Just that my circuits, for the most part, make sense to me and
work...