I'm still working on my battery monitor ( hey , it functions!), and I want to clarify a small point.
I'm sure that I've read on the Freaks forum, that schottky diodes are good for protection against the many nasties of the automotive voltage environment.
But, when I go to Digikey et al, I keep getting to TVS diodes, which are NOT the same thing. They talk about zener and avalanche devices, and I don't know which would be better.
For Vcc, I'm planning to use an automotive grade regulator, and maybe some diode protection.
For the voltage to be measured, I thought that I'd hook it up as shown below.
This is not what's shown in the app notes -- they often show a single device from plus to ground.
So - 2 questions
1. Is a TVS the right device ( and also single or bi directional)?
2. Is my 2 diode circuit a reasonable idea?