Definition:itc***istsofalayerofinsulatingdielectricbetweentwometalelectrodes.Whenavoltageisappliedbetweenthetwometalelectrodes,thechargeisstoredontheelectrode,sothecapacitorisanenergystorageelement.Anyoftwoconductorsthatareinsulatedandclosetoeachotherandformacapacitor.Theparallelplatecapacitorc***istsoftheelectrodeplateandthedielectricofthecapacitor[1].Characteristics:1.Ithascharge-dischargecharacteristicsandtheabilitytopreventDCcurrentfrompassingthrough,allowingACcurrenttopassthrough.2.Duringcharginganddischarging,thechargeonthebipolarplateaccumulates,thatis,thevoltageissetup,therefore,thevoltageonthecapacitorcannotbeabrupt.Capacitorcharging:twoplateswiththesameamountofdissimilarcharge,eachplatewiththeabsolutevalueofthechargeiscalledcapacitorcharge.)