OMG, PSRR!: Protect yourself from your supplies [Shop Talk: What you Didn’t Learn in School]

Power supply noise has a way of crushing your innocent preconceptions like Godzilla versus Bambi. Things you take for granted will turn out to be wrong. Assumptions you make routinely will prove false. Your world is about to become a whole lot more complex. And hostile. Sorry. (See Figure 1 to appreciate the gravity of the situation.)