Trying to run powerhead with DC.......

[daves66nova]

While i was running an 802 powerhead and watching how the impeller goes back and forth to push water,I thought,would it be possible to run it in DC,so that it pumps out more flow? Here's a pic of a powerhead. http://www.ebay.com/itm/AquaClear-70-802...=item35a51e3c92

 

[daves66nova]

It's only 20w ,nobody??

 

[Loobed]

I don't understand. If it already has an AC motor you can't just hook up DC.

 

[Dave Sherman]

I don't know why you would think you would get more flow running it off DC, that makes no sense. Aquarium pumps often use shaded pole AC motors, and won't take kindly to DC.

 

[daves66nova]

Originally Posted By: Dave Sherman
I don't know why you would think you would get more flow running it off DC, that makes no sense.
Because with a/c, it goes ccw and cw really quick.i thought if it would spin in one direction only,that it'll pump a little more.Pump is a small one, 30-40 dollar at most

 

[Dave Sherman]

Originally Posted By: daves66nova
Originally Posted By: Dave Sherman
I don't know why you would think you would get more flow running it off DC, that makes no sense.
Because with a/c, it goes ccw and cw really quick.i thought if it would spin in one direction only,that it'll pump a little more.Pump is a small one, 30-40 dollar at most


Eh? Why do you think it turns clockwise and counter clockwise really quick? AC induction motors run in one direction continuously.

 

[daves66nova]

Originally Posted By: Dave Sherman
Eh? Why do you think it turns clockwise and counter clockwise really quick? AC induction motors run in one direction continuously.
Contradiction here?

 

[Dave Sherman]

Originally Posted By: daves66nova

Not at all. Certainly my aquarium pumps run in one direction. So does my desk fan, dishwasher pump, air conditioning compressor, circulating fan, and others. Thanks to Nikola Tesla, we have the AC induction motor that does run continuously in one direction. The small motors in an aquarium pump or desk fan are a type known as a shaded pole induction motor.

http://en.wikipedia.org/wiki/Shaded_pole_motor