Again, switching may be accomplished through electro/mechanical devices such as relays or {HEAD ~ solid state devices} such as SCRs, triacs or {TAIL ~ MOSFETS} 
such as
Again , switching may be accomplished through electro / mechanical devices such as relays or { HEAD ~ solid state devices } such as SCRs , triacs or { TAIL ~ MOSFETS }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL