The source is grounded, and {HEAD ~ the gate} is attached to {TAIL ~ the drain} or to the source 
The source is grounded , and { HEAD ~ the gate } is attached to { TAIL ~ the drain } or to the source
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH