but they could also be added to both top and bottom ends of the box. When the box experiences an acceleration, the levitating magnet oscillates in the guide box.Ideally, the frequency of the acceleration on the guide box matches the resonant frequency of the device to maximize mass movement and thus maximize power output. As the levitating magnet moves through the coil wrapped around the box, a voltage is induced on the coil, producing a current that flows into an attached electrical load.