In {TAIL ~ the preferred embodiments} {HEAD ~ switches} are electromagnetic relays; other types of switches suitable for the voltages and currents of the motor circuit, or even digital logic, can be employed in alternative embodiments 
In
In { TAIL ~ the preferred embodiments } { HEAD ~ switches } are electromagnetic relays ; other types of switches suitable for the voltages and currents of the motor circuit , or even digital logic , can be employed in alternative embodiments
REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH