E., the battery. This describes why electrolytic capacitors are not commonly viewed in this sort of applications. DC-backlink capacitors for DC-DC converters include film and ceramic capacitors due to their low ESR and fast Electrical power reaction features. Figure seven: A community of film and ceramic capacitors with damping resistors https://betadinebuyonline63825.total-blog.com/everything-about-emi-and-emc-filter-design-56568646