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