TheproposedPLCtransmitterisshowninFigure4andconsistsofthePIC
16F876whichisusedasadatasourceanddatasynchronizer,anOOKmod-
ulator,apoweramplifierandaninterfacingcircuit.Alevelconverter(an
operationalamplifierwhichworksasasimplecomparator)isusedtoconvert
datalevelsbetweenthePICandtheOOKmodulator.