A voltage stimulus applied to the drain forces current to flow through {HEAD ~ the channel} coupling {TAIL ~ the drain} to the source 
coupling
A voltage stimulus applied to the drain forces current to flow through { HEAD ~ the channel } coupling { TAIL ~ the drain } to the source
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH