A tradionaldevice capable of generating high electrostatatic potententio that can produce spark of length up to 3” under favourable weather cer condiEquipped with two clear acrylic plates, each of diameter about 10” and having aluminium sectors permanently pasted radially along the rim. Both the plates mounted parallel to each other and rotate in opposite direction through a belt-pulley arrangement. Pulley on one wheel has handle for manual rotation A set of charge c collec combs is mounted towards either end of a horizontal insulangbeam, together with the adjustable spark gap arms, the laaer equipped with small metallic sphere discharger at one end and long insulang handle adjustment at the other end. The charge can be stored in a pair of high capacity Leyden jar capacitors that can be connected or disconnected as desired. When connected to the Leyden jars through a pair of levers, the spherical dischargers starts accumulating the charge and transfer of charge from one discharger to other takes place in the form electric spark jumping from one sphere to other as a consequence of build-up of sufficiently high potenendifference across the two spheres. The spark produced intermitently by the connnuouslrotata plates. Complete apparatus is mounted on a well insulated base that also carries a pair of earthing terminals for the Leyden jars.