A sort of metallized polypropylene pulse capacitor has been designed and two ways are introduced to increase the energy density of the capacitor: adopting inner series structure

choosing appropriate metallized film

ohm/sq. For prolonging the life of the metallized film is adjusted and the metallized film electrode rim is thickened more. The life test results reveal that the reason of the capacitor’s destroying can be confirmed to the breaking off of one element’s sprayed end

while the elements’ capacitance drop is due to the serious self-healing of the elements’ outer layer film and the entire self-healing of the metallized film middle interspace.