Change rotation of a 12V motor back and forth


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Old 05-07-18, 06:19 PM
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Change rotation of a 12V motor back and forth

I have a 12V electric motor from a treadmill that I want to be able to change back and forth from cw to ccw. Any suggestions on switches and wiring would be appreciated.
 
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Old 05-07-18, 06:32 PM
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Welcome to the forums.

Depending on the load.... it can definitely be done with relays.
Possibly a switch.
Is there an amperage draw for that motor ?

If the load was under 15A or so.... you could use a HD toggle switch....
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Old 05-07-18, 06:40 PM
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It can be done with DPDT switches with center off. Just wire center terminals to the motor and one side of terminals to 12V + and -. The other terminals with opposing polarities.

You can make one with a 4 way switch as well, but then you will need another switch for on/off.

Make sure the motor comes to complete stop before switching the direction. Otherwise it will fry the motor or the wiring.
 
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Old 05-14-18, 04:35 PM
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Thanks for the advice. I picked up a Grote 15A 3 position switch at a local auto parts store. When I got home and opened the package it says "15A 125VAC / 10A 250VAC/ On Off On" but nothing about 12 V application. Does it matter if I use this switch in a 12V application. I live 40 Km from town so I'm not real anxious to go back if it isn't necessary.
 
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Old 05-14-18, 04:48 PM
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The voltage rating of a switch is the maximum voltage it can be used on.
That should be fine..... give it a try.
 
 

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