Over-voltage protection

[Demon]

why aren't you just using a simple LM7805 regulator which will take any input of say 6 to 32 volts and protect the micro ? That could take the place of all the other circuitry, plus input voltage fluxuation.

That was my first idea, but I don't know just how far a 7805 can take abuse, compared to the TVS, NTC and MOV?

And then I'd still like to pop a fuse if things get out of hand. Been playing some more with it, added some caps up front, took off the red LED (fuse will tell me something went wrong), added direction diode and simplified the green LED.



What happens with a 7805 if a user plugs in the wrong wall adapter? I have dozens myself of all powers, accumulated over the ages.

Robert