I'm trying to build a Van der Graaf generator with my little brother for a school project. The thing is we get a electric motor from and old blender and want to use that for power our generator, but the motor is too fast and make vibrate everything around.
I was wondering if there is a simple (and safe way) to reduce the speed, I read that the speed in this induction motors is regulated by the frequency, so the question is: is there a simple (and safe) circuit to lower the 60 Hz ( and 110 V) of the electric network, to say the half of that frequency? Or a third?
Thanks for your answers.