{HEAD ~ A direct voltage flyback converter} includes {TAIL ~ a primary winding} of a transformer in series with the switching path of a controllable switch which is connected in turn to a control device  
includes
{ HEAD ~ A direct voltage flyback converter } includes { TAIL ~ a primary winding } of a transformer in series with the switching path of a controllable switch which is connected in turn to a control device
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL 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 OTH OTH