Re: Lost steps

Your explaination of what was beyond me is still mostly beyond me.

At the places where the 37 V, and the 5V supplies enter the boards
there are capacitors which I assume are doing what you are talking
about.

The puzzling part of this whole thing to me is that if my problems
are
not my motors or connections or mosfets, then the problem must be
with
the product or it's directions, and if it were those why doesn't
Camtronics have lots of such problems. I think Dan sells this same
setup to Shoptask both as a kit and a finished product.

Jerry

--- In CAD_CAM_EDM_DRO@egroups.com, JanRwl@A... wrote:
> In a message dated 8/20/00 10:24:22 PM Central Daylight Time,
Ozzie@h...
> writes:
>
> << Your first two paragraphs are a bit beyond my knowledge base. I
don't
> know what circuits properly bypassed means >>
>
> Sorry, I know nothing of proprietary ("store-bought") driver
circuits that I
> have never had in my own grubby hands.
>
> "Bypassing" is "Electronic-speak" for [bypassing noise to ground],
and the
> word usually implies that CAPACITORS are connected from each
power-supply
> line to GROUND. Some DC power-supplies are +5VDC only, and some
are
such as
> +5, +12, -12, and kitchen-sink, pluse "O Volts" (or "ground"). To
"bypass",
> say, the 5VDC, you would run a 0.1 uf. capacitor from it, generally
very
> close to the "load", and then directly to ground, via the shortest,
> "beefiest" connection you can make (within reason! Not with #4
Kearnies,
> but, say, to a "ground track" on the PCB at least 1/4" wide, etc.
That is,
> not a 1/64" wide "signal track" 4" long from where it last was
connected to
> such a "beefy" ground.)
>
> Or, some would surely use MUCH more capacitance than that 0.1 uF!
That
> latter would work only to "bypass" such as "radio-noise" to ground,
but if
> you had, say, "electrical noise" due to motor-starting, etc., you
would want
> to use 10 uF or even more, and ALSO a "ceramic" or "mylar" 0.1uF,
in
> parallel! It's a kinda nebulous thing that lektronik-tinkerers
learn with
> years of cobbling PC-boards, etc! And, as you should surmise from
my
> grammar, here, I am NOT a wizard, and some "ol' boy" in this group
with more
> grey-matter between his ears should answer you, instead of dum' ol'
me!!!
> (But I'm happy to supply the levity!) Jan Rowland