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