Filtering:capacitorsusedinfiltercircuitsarecalledfiltercapacitors,whichareusedinpowersupplyfilteringandvariousfiltercircuits.Thefiltercapacitorsremovesignalsinacertainfrequencybandfromthetotalsignal[2].Decoupling:capacitorsusedindecouplingcircuitsarecalleddecouplingcapacitors,whichareusedinDCvoltagesupplycircuitsofmultistageamplifiers.Decouplingcapacitorseliminateharmfullow-frequencyintersecti***betweeneachamplifier[2].Highfrequencydamping:thecapacitanceusedinthehighfrequencydampingcircuitiscalledthehighfrequencydampingcapacitor.Intheaudionegativefeedbackamplifier,inordertosuppressthepossiblehighfrequencyselfexcitation,thiskindofcapacitorcircuitisused.Toeliminatethehighfrequencyscreamsthatmayoccurintheamplifier[2].)