I'm trying to understand the function of the constant current regulator CCR and the zener diode 1N5338. I do have more questions but these two components is probably a good start.
I understand that a zener diode is voltage regulator but not sure why it is included. As for the CCR I have no idea what its purpose is in this circuit.
The link to the web page where I found this: https://www.electronicdesign.com/power-management/article/21801456/current-limiter-offers-circuit-protection-with-low-voltage-drop