Triac driver optoisolators fairchild semiconductor moc3041m a triac driver optoisolator which simplifies logic control of 115 vac power zero voltage crossing vde recognised suitable for use with triac in the interface of logic systems to equipment powered from 115v ac lines applications include teletypewriters crts solid state relays industrial controls printers motors solenoids and consumer appliances fairchild semiconductor moc3041m triac driver optoisolator