So for a school project, I am required to convert an AC motor to a generator. Actually, it is a table fan of diameter approximately 10-12 inches, and runs on AC power at 220V 50Hz. I want to convert it into a windmill, but I'm stuck on the power generation part. So using materials easily available in a high school physics laboratory, how can I convert an AC motor table fan into a generator? Also, what would the output of the generator made in volts and amperes?