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