{HEAD ~ The system} includes a circuit board, {TAIL ~ a solid state switching device}, a heat sink, and a temperature sensor 
{ HEAD ~ The system } includes a circuit board , { TAIL ~ a solid state switching device } , a heat sink , and a temperature sensor
HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH