The fluorescent lamp 2 has one filament 21 connected to {HEAD ~ the secondary winding} 14 of {TAIL ~ the transformer} 1 to be heated and another filament 22 connected to the secondary winding 15 of the transformer 1 to be heated 
of
The fluorescent lamp 2 has one filament 21 connected to { HEAD ~ the secondary winding } 14 of { TAIL ~ the transformer } 1 to be heated and another filament 22 connected to the secondary winding 15 of the transformer 1 to be heated
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH