This results in {HEAD ~ a ramp} shaped {TAIL ~ current rise} in the first coil L1 which is ended again when the field effect transistor T is cut off 
This results in { HEAD ~ a ramp } shaped { TAIL ~ current rise } in the first coil L1 which is ended again when the field effect transistor T is cut off
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD 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