I'm studying Rudy Severns eBook Snubber Circuits for Power Electronics; great read by the way.
In it he has the following figure, notice the phrase in the caption "including voltage and polarity conventions":
Should I take this to mean that there is a conventional orientation for the "opening" and "hinge", so to speak, of the switch symbol in a schematic? At least in a DC context where current would only be flowing the one direction?
I hadn't encountered that before and kind of have my doubts, but my engineering mind would like a convention that leads to a one-and-only-one right way to orient a symbol that otherwise has a degree of freedom to it.