[TechAssist] Re: Isolation transformer question
- From: "Jim Myers" <jr.myers@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Mon, 4 Feb 2002 10:47:53 -0500
The scope is not what should be isolated, the unit under t.e.s.t. is what
should be isolated. The UUT should be isolated from scope, soldering iron,
etc.
Jim Myers
jr.myers@xxxxxxxxxxx
----- Original Message -----
From: "Minesafe" <minesafe@xxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Monday, February 04, 2002 10:33 AM
Subject: [TechAssist] Re: Isolation transformer question
We have all our scopes on their own iso transformers. But we had to cut all
the grounding pins off the plugs. Why do they make an isolation transformer
and then give it a common ground through the ground pin on the three wire
line cord?
Jim
minesafe@xxxxxxxx
MineSafe Electronics
Contributing to safe mining since 1975
----- Original Message -----
From: "Jeff Dougherty" <jeff@xxxxxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Sunday, February 03, 2002 2:37 PM
Subject: [TechAssist] Re: Isolation transformer question
>
> Thanks to everyone for their input on this.
> I appreciate it. Mine has only two outlets, both are protected.
> Jeff
>
> FAX 1-413-280-0677
> Jeff Dougherty
> Intrepid Video & Electronics
> 501 Luther Rd
> Harrisburg, PA 17111
> 717-909-8844
> VCR tips, electronics info & general interest.
> www.intrepid-video.com www.tech-repair.net www.thetoolcaddy.com
>
>
> ----- Original Message -----
> From: "MikE" <patsvcr1@xxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Sunday, February 03, 2002 11:45 AM
> Subject: [TechAssist] Re: Isolation transformer question
>
>
> >
> > ALSO - be certain not to plug your scope (or
> > other test eqpt) into non-isolated outlets
> > and use while using the
> > iso-xfmr ... most test gear has three wire
> > ac cords which can lead to unexpected smoke
> > .... MikE
> >
> > -----Original Message-----
> > From: techassist-bounce@xxxxxxxxxxxxx
> > [mailto:techassist-bounce@xxxxxxxxxxxxx] On
> > Behalf Of Damon
> > Sent: Saturday, February 02, 2002 2:48 PM
> > To: techassist@xxxxxxxxxxxxx
> > Subject: [TechAssist] Re: Isolation
> > transformer question
> >
> >
> > Yes it will protect your scope from damage
> > while you're working on the SMPS
> > primary, as long as you don't plug in the
> > scope and the TV on the same
> > outlet on your transformer.
> > The only thing you lose is YOUR protection
> > should the transformer's
> > wiring/winding decide to short to the metal
> > case parts.
> > Damon Brunger
> > damon101@xxxxxxxxxxxxxx
> > Telrad Electronic Services
> > Ft Wayne, IN 46815
> > ----- Original Message -----
> > From: "Jeff Dougherty"
> > <jeff@xxxxxxxxxxxxxxxxxx>
> > To: "Techsonline" <techassist@xxxxxxxxxxxxx>
> > Sent: Saturday, February 02, 2002 1:31 PM
> > Subject: [TechAssist] Isolation transformer
> > question
> >
> >
> > >
> > > Can anyone tell me if an isolation
> > transformer can still protect when
> > > plugged into an ungrounded-two prong
> > outlet, such as in older homes?
> > > Thank you.
> > > Jeff
> > >
> > > FAX 1-413-280-0677
> > > Jeff Dougherty
> > > Intrepid Video & Electronics
> > > 501 Luther Rd
> > > Harrisburg, PA 17111
> > > 717-909-8844
> > > VCR tips, electronics info & general
> > interest.
> > > www.intrepid-video.com www.tech-repair.net
> > www.thetoolcaddy.com
> > >
> > >
> > >
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