And, in the same sense, earthed ground is very
important for lots of things.$
Please don't use paragraph-length lines.
Compensating,
There are two good reasons ECL runs at negative
voltages:
- The output drivers are emitter-followers, so [...]
Um, doesn't this assume which polarity of transistor you're using?
Except for asymmetries in the behaviour of the dopants, I can't see any
raeson why any bipolar technology wouldn't work equally well if you
swap NPN and PNP, reverse all diodes, and negate all voltages. Am I
missing something?
- The system "ground" is typically more
stable,
This mystifies me. Why would system ground be more stable if you view
the power supply as ground-and-negative rather than
ground-and-positive?
This has a lot more to do with the way we treat what
we want to call
"ground" than any reason relating to its absolute potential, of
course.
I'm still mystified. How do people treat ground-and-negative power
differently from ground-and-positive that makes ground stabler?
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