A wind machine comprises a plurality of fabrics that are removeably installed on a rotatable carrier. The flow device may be a pump such as a positive displacement pump or a hydrodynamic pump. When the MOSFET is reverse-biased, depletion regions extend from the dielectric sidewall spacers into the \u201cdrift\u201d region, shielding the gate oxide from high electric fields and increasing the avalanche breakdown voltage of the device. The rotating display members preferably have three image surfaces.