reverse polarity circuit for pump

[shankos]

I am not an electronics person and need to confirm if this would work.

In the diagram pictured i am trying to make a reverse polarity circuit to a pump from a battery. operated by two switches to reverse the polarity.

**broken link removed**

on the left side of diagram the + and - are the battery. On the right the oval is a pump that is operated with reversed polarity to change its direction.

the 3 dots are switches. Single polarity double throw relay switches. By default the switch is set to one position.

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In theory it should work as follows

When i change the top switch polarity goes in one direction.

When i turn the bottom switch polarity should go in the opposite direction.

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There is a loop on the negative polarity that goes back to itself because the SPDT switches are defaulted to one position. There is no no contact position.

Will this cause any problems ?

And will this diagram work in practice and just not theory ?

 

[SABorn]

I can see no reason it will not work.

Pete.

 

[#12]

This will work, but it's usually done with a double pole, double throw switch. It's just slicker to do it all with one click.

 

[shankos]

so the negative pole loop on the battery. will not cause any issues at all ?

 

[#12]

That's right.

 

[KMoffett]

Best with a Double Pole/Double Throw/Center Off switch.

Ken