Quote Originally Posted by richard View Post
... if you want the zenner to be a crowbar and blow a fuse, there are better ways.

I'm seeing this design a lot.

https://theorycircuit.com/crowbar-ov...ection-module/

It pops that fuse and puts an end to the shenanigans until the user corrects the situation.



I'd like to stay away from 3rd-party components as much as possible, and come up with a design as simple as possible.

Robert