In particular, the present invention provides a circuit having {HEAD ~ a voltage generator} for producing {TAIL ~ blocking polarity voltage} 
for producing
In particular , the present invention provides a circuit having { HEAD ~ a voltage generator } for producing { TAIL ~ blocking polarity voltage }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL