the gate turn off {HEAD ~ thyristor} having low inductance connections to {TAIL ~ the snubber circuit} 
the gate turn off { HEAD ~ thyristor } having low inductance connections to { TAIL ~ the snubber circuit }
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL