Thereafter, {HEAD ~ the rectifying circuit} rectifies the intermediate currents current to produce {TAIL ~ a rectified current} 
Thereafter , { HEAD ~ the rectifying circuit } rectifies the intermediate currents current to produce { TAIL ~ a rectified current }
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL