Isifudumezi sePTC sisifudumezi esenzelwe izithuthi zamandla amatsha.Isifudumezi se-PTC sifudumeza isithuthi sonke, sibonelela ngobushushu kwi-cockpit yesithuthi samandla esitsha kwaye siyahlangabezana nemilinganiselo yokukhusela i-frosting ekhuselekileyo kunye nokunciphisa inkungu.Isifudumezi se-PTC sinokufudumeza ezinye iindlela zesithuthi ezifuna ulawulo lobushushu (umz. ibhetri).Isifudumezi se-PTC sisebenza ngokufudumeza ngombane isithinteli-mkhenkce ukuze sifudunyezwe ngaphakathi ngumbindi womoya oshushu.I-heater ye-PTC ifakwe kwindlela yokujikeleza kwamanzi apholileyo apho ubushushu bomoya ofudumeleyo buthambile kwaye bulawuleka.I-heater ye-PTC iqhuba ii-IGBTs kunye nommiselo we-PWM ukulawula amandla kwaye inomsebenzi wokugcinwa kobushushu ixesha elifutshane.Isifudumezi se-PTC sihambelana nokusingqongileyo kwaye siwonga amandla, ngokuhambelana nokuzinza kokusingqongileyo kumaxesha anamhlanje.