Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
Phil Allison
Surely an isolation transformer is just that...
** Shame it is not so in the USA
- you Steaming Great Fuckwit ...............
But I'm not in the USA and neither are you.
Apparently you assume that I didn't understand that.
"Phil Allison"
The question is not about the number but the nature of the item.
.... Phil
"Wild_Bill Top Poster from Hell"
Apparently you assume that I didn't understand that.
** Could not be plainer that you did NOT understand the issue.
"Phil Allison"
The question is not about the number but the nature of the item.
.... Phil
** The only point you have, pal, is on the top of you fat head.My point,
was that you're not going to teach anyone proper grammer or composition
on usenet..
If using a proper isolating transformer, there will be no reference to
ground even with a 'live' chassis. The only way to get an electrical shock
is to touch both outputs from the transformer.
Why is the test equipment grounded?Not true. You connect the chassis of the UUT to the test equipment,
so ANY voltage you contact inside the UUT is referenced to ground.
Not true. You connect the chassis of the UUT to the test equipment,
so ANY voltage you contact inside the UUT is referenced to ground.
Why is the test equipment grounded?
In article <as-dnYa6P-Qth4nRnZ2dnUVZ_tSdnZ2d@earthlink.com>,
Michael A. Terrell <mike.terrell@earthlink.net> wrote:
If using a proper isolating transformer, there will be no reference to
ground even with a 'live' chassis. The only way to get an electrical shock
is to touch both outputs from the transformer.
Not true. You connect the chassis of the UUT to the test equipment,
so ANY voltage you contact inside the UUT is referenced to ground.
Why is the test equipment grounded?
"Dave Plowman (News)" wrote:
In article <as-dnYa6P-Qth4nRnZ2dnUVZ_tSdnZ2d@earthlink.com>, Michael
A. Terrell <mike.terrell@earthlink.net> wrote:
If using a proper isolating transformer, there will be no
reference to ground even with a 'live' chassis. The only way to
get an electrical shock is to touch both outputs from the
transformer.
Not true. You connect the chassis of the UUT to the test
equipment, so ANY voltage you contact inside the UUT is referenced
to ground.
Why is the test equipment grounded?
Yawn. You really do need to sort out how to work in a safe environment.Yawn... Why are people stupid?
Phil: consider it to be "self correcting" instead..."Dave Plowman (Rabid Pommy Nut Case) "
Not true. You connect the chassis of the UUT to the test equipment,
so ANY voltage you contact inside the UUT is referenced to ground.
Why is the test equipment grounded?
** Not merely stupid, but dangerously fucking STUPID !!
.... Phil
Phil: consider it to be "self correcting" instead...
Dang, you confirm stupidity... Amazing! Any test equipment DESIGNED toIn article <wYidnYOdhZNaOYjRnZ2dnUVZ_hOdnZ2d@earthlink.com>,
Michael A. Terrell <mike.terrell@earthlink.net> wrote:
"Dave Plowman (News)" wrote:
In article <as-dnYa6P-Qth4nRnZ2dnUVZ_tSdnZ2d@earthlink.com>, Michael
A. Terrell <mike.terrell@earthlink.net> wrote:
If using a proper isolating transformer, there will be no
reference to ground even with a 'live' chassis. The only way to
get an electrical shock is to touch both outputs from the
transformer.
Not true. You connect the chassis of the UUT to the test
equipment, so ANY voltage you contact inside the UUT is referenced
to ground.
Why is the test equipment grounded?
Yawn... Why are people stupid?
Yawn. You really do need to sort out how to work in a safe environment.
All it needs is some common sense. Do you ground one side of a battery DVM
too?
Noise reduction.In article <jqp6161lis3v93582a2p4q6g9212udvqpt@4ax.com>,
JW <none@dev.null> wrote:
On Fri, 11 Jun 2010 10:30:56 +1000 "Phil Allison" <phil_a@tpg.com.au
wrote in Message id: <87dee7Fdj9U1@mid.individual.net>:
"JW"
Can anyone recommend a good isolation transformer for sale on-line?
** What kind ??
There are two:
1. Galvanic isolation - for use on a service bench.
Galvanic. Thanks - didn't realize there are different kinds. Don't want
to kill myself!
It certainly seems to me stupid to have the same name for different
devices like this. What is the point of an isolating transformer which
doesn't isolate?
The Tripp-Lite device has secondary attached to GROUND. This is NOTOn Fri, 11 Jun 2010 08:24:36 -0500 Chuck <ch@deja.net> wrote in Message
id: <r7e416tt40mloqh91evegbjo9eb2qllqjk@4ax.com>:
On Thu, 10 Jun 2010 09:44:12 -0400, JW <none@dev.null> wrote:
Can anyone recommend a good isolation transformer for sale on-line?
Need one that will handle 5 amps or so at 120VAC, and have a standard AC
plug at the outlet. Prefer one for less than $100 or so, unless that seems
unreasonable. Found one at Mouser for $114 but that's only good for 1.25A.
Getting lots of irrelevant hits on google...
Thanks.
MCM Electronics has one. Chuck
Thanks Chuck. Looking at these for the moment:
http://www.mcmelectronics.com/product/TRIPP-LITE--POWER-PROTECTION--IS500-/28-1
0160
http://www.mcmelectronics.com/product/TENMA-72-1097-/72-1097
Proper is the key. I would say over 98% of so called isolation transformersIn article <j7g716l13t96u9322qmqjiv8r5ppua3tdj@4ax.com>,
PlainBill47@yahoo.com> wrote:
That would be news to large numbers of electronics technicians who had
to use an isolation transformer when servicing TVs and other 'live
chassis' consumer electronics. There IS a reason the advice was 'to
always keep one hand in your pocket'.
If using a proper isolating transformer, there will be no reference to
ground even with a 'live' chassis. The only way to get an electrical shock
is to touch both outputs from the transformer.
This is the description in the specs...............In article <25q616l11jlnq0o0gtut5vu5p4el4fiscl@4ax.com>, JW <none@dev.null
wrote:
On Fri, 11 Jun 2010 08:24:36 -0500 Chuck <ch@deja.net> wrote in Message
id: <r7e416tt40mloqh91evegbjo9eb2qllqjk@4ax.com>:
On Thu, 10 Jun 2010 09:44:12 -0400, JW <none@dev.null> wrote:
Can anyone recommend a good isolation transformer for sale on-line?
Need one that will handle 5 amps or so at 120VAC, and have a standard AC
plug at the outlet. Prefer one for less than $100 or so, unless that seems
unreasonable. Found one at Mouser for $114 but that's only good for 1.25A.
Getting lots of irrelevant hits on google...
Thanks.
MCM Electronics has one. Chuck
Thanks Chuck. Looking at these for the moment:
http://www.mcmelectronics.com/product/TRIPP-LITE--POWER-PROTECTION--IS500-/28-
1
0160
http://www.mcmelectronics.com/product/TENMA-72-1097-/72-1097
The Tripp-Lite device has secondary attached to GROUND. This is NOT
want you want. All Tripp-Lite supplies are attached to ground forming a new
neutral to
make a noise reduction device, period.
I hope the second device has ground isolation.
Greg
Check out stock number 72-6670 isolation transformer $65.00. We'veOn Fri, 11 Jun 2010 08:24:36 -0500 Chuck <ch@deja.net> wrote in Message
id: <r7e416tt40mloqh91evegbjo9eb2qllqjk@4ax.com>:
On Thu, 10 Jun 2010 09:44:12 -0400, JW <none@dev.null> wrote:
Can anyone recommend a good isolation transformer for sale on-line?
Need one that will handle 5 amps or so at 120VAC, and have a standard AC
plug at the outlet. Prefer one for less than $100 or so, unless that seems
unreasonable. Found one at Mouser for $114 but that's only good for 1.25A.
Getting lots of irrelevant hits on google...
Thanks.
MCM Electronics has one. Chuck
Thanks Chuck. Looking at these for the moment:
http://www.mcmelectronics.com/product/TRIPP-LITE--POWER-PROTECTION--IS500-/28-10160
http://www.mcmelectronics.com/product/TENMA-72-1097-/72-1097
A bit more than I wanted to spend and a little less current capability,
but those may be the breaks.
If you are isolating the equipment you're working on for safety reasonsYawn. You really do need to sort out how to work in a safe environment.
All it needs is some common sense. Do you ground one side of a battery DVM
too?
Dang, you confirm stupidity... Amazing! Any test equipment DESIGNED to
not be grounded isn't grounded. And test equipement that is designed
to be grounded damned well better be grounded.
Then they should have a different name.If using a proper isolating transformer, there will be no reference to
ground even with a 'live' chassis. The only way to get an electrical
shock is to touch both outputs from the transformer.
Proper is the key. I would say over 98% of so called isolation
transformers are for noise control, not serving chassis.
Thats what I said before !!!!In article <hv5a8i$h02$3@usenet01.srv.cis.pitt.edu>,
GregS <zekfrivo@zekfrivolous.com> wrote:
If using a proper isolating transformer, there will be no reference to
ground even with a 'live' chassis. The only way to get an electrical
shock is to touch both outputs from the transformer.
Proper is the key. I would say over 98% of so called isolation
transformers are for noise control, not serving chassis.
Then they should have a different name.
In article <bv8c16h71hdp340kc6d0scspkddjqrufdp@4ax.com>,
PeterD <peter2@hipson.net> wrote:
Yawn. You really do need to sort out how to work in a safe environment.
All it needs is some common sense. Do you ground one side of a battery DVM
too?
Dang, you confirm stupidity... Amazing! Any test equipment DESIGNED to
not be grounded isn't grounded. And test equipement that is designed
to be grounded damned well better be grounded.
If you are isolating the equipment you're working on for safety reasons
doesn't it make sense to use isolated test gear too?