How to reverse the direction of a dc motor with a capacitor after power has been cut?

roboticlay

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I am working on building an automatic cat food feeder out of an alarm clock.
When the alarm goes off it triggers a geared motor with a pulley system to pull the lid off a container until a kill switch is struck.

I would like to know how to wire the motor to go in the reverse direction after the power is cut, any ideas?

Thanks in Advance!
Etto... I'm not talking about an air conditioner, I have a dc servo motor that runs off 5v. I am trying to come up with a circut that will supply a charge in the opposite direction after the main powerline has been cut.

My circut so far => http://yfrog.com/0382711194p
 
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