Re: [CAD_CAM_EDM_DRO] Electrical Wizards ?

Electrocution and serious damage to the right rear pocket (wallet)

"Old electrictians are cremated equal"

Use a isolation transformer before or after the autotransformer or Variac.

fuse the input and output to the ratings of the Variac, fuses cost less.

Ground the case etc.

If you are not sure of the difference between the ground wire and the
neutral wire or the concept of a grounded neutral you probably need help.

Hugh

----- Original Message -----
From: "Chris L" <datac@...>
To: "CCED" <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Friday, January 04, 2002 6:45 PM
Subject: [CAD_CAM_EDM_DRO] Electrical Wizards ?


> I have a really, really dumb question. A friend of mine asked why he
> could not "Dial down" a variac and use it to supply power for a stepper
> driver system. I could only conclude that there is the chance it could
> not maintain the voltage accurately, in fact even fail miserably,
> because it is nothing like having Primarys and Secondarys of a
> transformer. true ??
>
> Then I was wondering what actually happens if Variacs are used to supply
> a transformers primary winding. If it was all setup, and running some
> stepper drivers and you dialed down the voltage, What do the Stepper
> motors do ?
>
> Slow Down ? get weak ? What ?
>
> I slept thru most of electronics class.... now I pay for it.
>
> thanks,
>
> Chris L
>
>
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