Trevor Jordan writes:
>But if it were simply an arbitrary choice of positive earth, and there are
>no particular advantages in either arrangement, then why did we
>subsequently go to the trouble of changing to negative earth?
>
>Trevor Jordan
>74 TR6 CF29281U
Some selected Positive earth and some selected negative earth and
the folks who selected negative earth had more marketing prowess and
thus it became the defacto standard. But being a defacto standard
doesn't make it superior. Observe exhibit #1: Microsoft Windows
Dave Massey
57 TR3 (positive earth)
71 TR6 (negative earth)
80 TR8 (negative earth)
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