I am looking at the wiring diagram of two 1 W UV diodes and one datasheet suggests to put one zener diode in parallel, the other suggests to use two opposite zener diodes in parallel.
I am very curious and would like to learn something instead of blindly following instructions. Why are those diode recommended ? Why the difference between the two wiring diagram? Parts are similar and from the same manufacturer.
Also, it is not clear wether or not these zener diode are to be added in the electronic design or if they are included in the packaging. Does anyone know?