Fw: [CAD_CAM_EDM_DRO] servo amps, power supplies; addl endearments

Can you explain an isolation transformer?
http://www.smpstech.com/qa/qa0002.htm

----- Original Message -----
From: Ian Wright <Ian@...>
To: <CAD_CAM_EDM_DRO@egroups.com>
Sent: Thursday, November 09, 2000 2:46 PM
Subject: Re: [CAD_CAM_EDM_DRO] servo amps, power supplies; addl endearments


> Hi,
>
> I may be a simple 'ol country guy but I was fairly sure that ANY
> transformer - other than an Autotransformer - was an isolating
transformer.
> An Autotransformer definitely isn't as it has only one winding with
> different tappings for the different voltages but any other transformer
> which has separate windings for the primary and secondary provides
> isolation. Where a transformer is used in the middle of a circuit as in
> audio amplifiers etc., one end of each winding may be connected together
on
> the circuit board to give ground continuity but the transformer itself
will
> have isolated windings. The way to check is to put an Ohmmeter (multimeter
> set to resistance scale) across the transformer's terminations - you
should
> get low readings across the primary and secondary windings and infinity
> between the windings.
>
> Ian
> --
> Ian W. Wright
> Sheffield UK
> www.iw63.freeserve.co.uk
> ----- Original Message -----
> From: "Jon Elson" <jmelson@...>
>
> > Well, there it is! You need an external transformer to provide the
> > AC input. The rectifier and cap are there, but no transformer!
> >
> > > Before doing that, however, I'd like to find out what an
> > > isolation transformer is.
> >
>
>
>
> Welcome to CAD_CAM_EDM_DRO@...,an unmoderated list for the
discussion of shop built systems, for CAD, CAM, EDM, and DRO.
>
> Addresses:
> Post message: CAD_CAM_EDM_DRO@egroups.com
> Subscribe: CAD_CAM_EDM_DRO-subscribe@egroups.com
> Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@egroups.com
> List owner: CAD_CAM_EDM_DRO-owner@egroups.com, wanliker@...
> Moderator: jmelson@... [Moderator]
> URL to this page: http://www.egroups.com/group/CAD_CAM_EDM_DRO
> FAQ: http://www.ktmarketing.com/faq.html
> bill,
> List Manager