i am doing my final year project. i use 4N26 as elctrical isolation. the zener diode 5.1V is used to protect microcontoller. my microcontroller max input volgate is 5.1V. let say the zener diode is ideal and i connect my circuit as shown. i choose Vce as output (7 to 14V ), but i not sure my zener diode is correctly coneected or not.. anybody can help me? thnak you very much.