Re: AM Radio and power supplies...

Use a 5-conductor sheilded cable to the motor. 4 wires connect to the
motor, the 5th wire connects to the motor case. The motor case wire
returns to a single-point ground connection in your box. The sheild
connects to the same ground point. Leave the motor end of the sheild
unconnected. Do that and the Golden Oldies will come thru loud and
clear.

Mariss

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "turbulatordude"
<davemucha@j...> wrote:

> Hi all,
>
> I have a simple 4 axis unit, 4 Gecko's, power supply and such.
>
> My problem is that the radio whistles and whines when the Gecko's

are

> connected.
>
> The pitch raises and lowers over a minute or less.
>
> I was wondering if I am just stuck with the problem or if there was
> something I was doing wrong.
>
> The Gecko's are in a steel enclose with plastic window for seeing

the

> status and air vents.
>
> The cables are all shielded between the Geckos and the carrage, and
> the last foot is not shielded.
>
> My goal would be to listen without the noise, but am also afraid

that

> just because I can hear the whine, it might effect other things in
> the shop. My PC's seem to have no effect. Am I worrying about
> nothing ?
>
> If you want to respond, please try to keep it on topic. (I'm hope
> that's possible) If there is no way to reply on topic, please
> contact me direct.
>
> Dave
>
>
>
> Dave