I have a cordless phone that powers a piezo buzzer with 1 volt ac current. I want to make a phone for a friend that uses the bells from an alarm clock instead of the buzzer. The bells' motor uses a 1.5 volt dc battery.

Can I convert the ac to dc and it be strong enough to power the motor? Is there a switch that will use the battery to power the motor, and just turn on when the current flows? Any other ideas to make this work? (I went with a cordless phone so there was no risk in pulling power from the phone line unintentionally)