Applications of Zero Voltage Crossing Optically

ApplicationsofZeroVoltageCrossingOpticallywww.fairchildsemi.comApplicationNoteAN-3004ApplicationsofZeroVoltageCrossingOpticallyIsolatedTriacDriversIntroductionintheirpresence.Briefexamplesoftypicalapplicationsarepresented.Thezero-crossfamilyofopticallyisolatedtriacdriversisaninexpensive,simpleandeffectivesolutionforinterfaceappli-cationsbetweenlowcurrentdccontrolcircuitssuchaslogicConstructiongatesandmicroprocessorsandacpowerloads(120,240orThezero-crossfamilyconsistsofaliquidphaseEPI,infra-380volt,singleor3-phase).