The parameter related to {HEAD ~ secondary current} may be the secondary current itself, or a voltage associated with {TAIL ~ secondary current} flowing through an impedance 
The parameter related to { HEAD ~ secondary current } may be the secondary current itself , or a voltage associated with { TAIL ~ secondary current } flowing through an impedance
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH