you do not mentioned the type of current AC or DC<br>
If AC, very easy to convert using a transformator.<br>
but DC, rather difficult.you need tyristuer, and power supply.<br>
many 110 VAC motors are set up to operate either 110 OR 220. Look at the rating plate on the motor and see. If yours is convertible, it will show how to move wires and jumpers for the 220 operation. Questions? Missing plate? Contact the motor manufacturer.<br>
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note that if you hook it up on 220 and it's set for 110, it will go really, really fast for a very short time, and burn up.
