Whether by inserting a plug into an electric outlet or by using batteries, a power source is necessary for operating electrical or electronic products. That is stating a rather obvious fact, now isn't it ? However, the fact that a single product has a variety of power sources with different characteristics that are skillfully used in combination is something that is not widely known. Switching power supplies that convert the electricity from an electric outlet to voltages or frequencies appropriate for the various parts, batteries that are light but have large capacities, and capacitors that provide electricity rapidly to chips that operate at ultra-high speeds are examples of the various energy devices that are incorporated in equipment and that perform the functions that are appropriate to the devices. Among these, NEC TOKIN's electric double-layer capacitor, "Super capacitor," supplements the function of batteries, and as a product that maximizes these functions, is used in a wide range of applications from ocean vessels and automobiles to mobile products. The attention-drawing "Super capacitor" is an energy device that is being widely adopted by a variety of fields. F series/HV series (Back-up power supply) FB series (Basic type) Large Capacitance type (Instantaneous Large Current Supply) 24V type