I was thinking in my car while going to class about WHY these center barb pumps would be auto-reversing. I came up with a very simple yet fundamental reason; because they are running off AC current!
With these cheap pumps, why would the manufacture spend extra money puting in components to make the pump run one way all the time? It is much simplier to just make it uni-directional and make a center barb and have it spin either direction.
With that being said, the spinning direction just happens to be what place that the AC current was at when you plugged in the pump. Once the pump starts spining, then the AC current doesnt care, it just switches the poles in the magnet and its done!
Now if someone could add a rectifier (I think) into the circuit to make an AC current act as a DC current, then the pump should spin in one direction no matter what..
This is my line of thinking and, honestly, if it sounds like crap, just understand that I have a massive headack and I am probably jsut dilusional.
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