With such arrangement, undesirable energy spikes produced in the primary windings from stray and leakage inductances is returned to {TAIL ~ the voltage source} means for {HEAD ~ subsequent use} by the voltage source means 
With such arrangement , undesirable energy spikes produced in the primary windings from stray and leakage inductances is returned to { TAIL ~ the voltage source } means for { HEAD ~ subsequent use } by the voltage source means
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH