TheMOC3041,MOC3042andMOC3043devicesconsistofgalliumarsenideinfraredemittingdiodesopticallycoupledtoamonolithicsilicondetectorperformingthefunctionofaZeroVoltageCrossingbilateraltriacdriver.Theyaredesignedforusewithatriacintheinterfaceoflogicsystemstoequipmentpoweredfrom115Vaclines,