Yes, putting the delta inside the box definitely gives the impression of a component of which the delta is a function, whereas just putting the deltas in without the bounding boxes makes it look like the delta is an actual component.
I'm sure I remember seeing a triangle used that way in a course on control systems but that was in 1990 and I can't remember anything useful because the lecturer had the stupidest way of talking about diagrams whilst facing away from the OHP so he'd nearly always be pointing to the wrong components...
Anyway, I also liked the idea expressed earlier of making the deltas look a little more delta-like than bare triangles. I'd be tempted to go one step further and explicitly use delta-t notation, but that may be a little to much like physics and not enough like EE.
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Date: 2005-01-14 07:38 pm (UTC)I'm sure I remember seeing a triangle used that way in a course on control systems but that was in 1990 and I can't remember anything useful because the lecturer had the stupidest way of talking about diagrams whilst facing away from the OHP so he'd nearly always be pointing to the wrong components...
Anyway, I also liked the idea expressed earlier of making the deltas look a little more delta-like than bare triangles. I'd be tempted to go one step further and explicitly use delta-t notation, but that may be a little to much like physics and not enough like EE.