A waveform management method for ballasts for {HEAD ~ use} in {TAIL ~ an electronic device}, comprising: 
in
A waveform management method for ballasts for { HEAD ~ use } in { TAIL ~ an electronic device } , comprising :
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH