Quote:
Originally Posted by ironman
I respectively need someone to explain to me how that happens.
In my way of learning, the coil of the PTO is an electromagnet that gets energized when 12 volts and ground are applied to it's windings.
The resistance of the coil windings is fixed and never changes, therefore the current going through it has to remain constant. current = voltage divided by resistance. (I=E/R).
So how does changing the air gap of a passive part in the game cause more current to flow thru the coil, whether it is a thousandth of an inch or a thousand miles. I'm probably wrong but I need it explained to me.
My money is on the windings shorting out, thereby lowering the coil resistance, thus sucking more current and heating the fuse and wire.
|
The windings are like that of a transformer, if you remove a transformers core the windings will overheat.
Same as the induction windings of the pto.
remove the disc and the windings overheat.
The disc becomes the core.
I'm sure google could explain the rule of physics that applies to the induction of a current in a core related to the turns & wire size.
off the top of my old grey head I can't remember the ohms of the pto induction coil when good.
but over 50% of the time, adjusting the air gap cures his symptoms and the coil is good.
Not to say that coils don't go bad, seen a few for sure.
