Re: electrical noise

Keith,

Additional thoughts:

- Using an isolated breakout board could help. Skyko drivers
can be very noisy, it is wise to isolate this signals. Keep in mind
skyko drives are not isolated.

- Our isolated C1 and C11 have helped some skyko users with
similar problems.
http://cnc4pc.com/Parallel_Port_Interface_Card.htm,
http://cnc4pc.com/Multifunction_CNC_Board.htm. The first versions of
these boards were sensitive to noise from noisy drives, but the new
revisions have been proven very effective in isolating and
eliminating noise.

- Make sure you do not have a ground loop in your wiring. Try
keeping the ground of the PC isolated from the ground of the drives.

- Use shielded cables and make sure they are grounded.

Arturo Duncan
http://cnc4pc.com

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "David G. LeVine"
<dlevine@...> wrote:

>
> At 06:36 AM 11/11/2007, you wrote:
> >Still no progress. New powersupply - same problem. Shielded wire

and

> > grounding one end. The Pixie just shuts off and on with a

jolt. Now

> >I could not even run the machine as the problem has worsened by

later

> >in the day yesterday. At this point I feel totally defeated...
>
>
> Is there anywhere you can put a car battery and a 7805 with a few

caps?

>
> If you suspect the power supply and/or grounding, putting it on a
> battery supply with a single point ground may shed light on the

problem.

>
>
>
> David G. LeVine
> Nashua, NH 03060
>