RE: [CAD_CAM_EDM_DRO] step multiplier

The parallel port is better at sinking current than sourcing it. Just
read a write-up on why it is so and while it is too much to get into
here in detail the concept is sound. So, by using the +5V as the common
the connection to the parallel port is now sinking the current. While it
probably would not make a difference in the real world it is technically
a better arrangement.

Tim
[Denver, CO]

> -----Original Message-----
>
>
> Hi Tim and Mariss,
>
> I was wondering why the +5 common is recommended over using
> ground? Is the difference significant?
>
> Thanks,
> Drew
>
> Addresses:
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