Provided is a display apparatus which can avoid the load increase and display rapidly the video of the selected channel. The silicon carbide components are made by a process that results in free-carbon in the components. The apparatus comprises a platform having a third surface extending transverse to the first and second surfaces. This circuit generates a safe control circuit. The cathode material is comprised of nano particles so that the specific surface area of such particles is increased, thereby allowing a suitable size distribution of the particles, improving the conductivity of the cathode material, and maintaining the capacity characteristics of the cathode material for batteries.