There is provided a compact and highly durable variable-speed traction drive transmission device. According to the present invention, a plurality of chips CH are arranged in each connecting head; each of the chips has a nozzle array of a plurality of nozzles. Homogeneous or composite nanotubes, nanojunctions and nanotrees may be fabricated by template-assisted processes in which colloidal suspensions andor modified sol-gels of the desired materials are deposited sequentially into the pores of a template. An overvoltage detection circuit is electrically interconnected with and causes the thyristor to energize the trip coil and cause the trip mechanism to trip open the contacts responsive to overvoltage between the first terminal and the neutral conductor. Whether tile arranging is performed in a managed or curated fashion or in a semi-curated fashion may be determined by taking into account any of the aforementioned factors.