Isolation transformer source
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From: GregS on 11 Jun 2010 15:55 In article <5125b83c80dave(a)davenoise.co.uk>, "Dave Plowman (News)" <dave(a)davenoise.co.uk> wrote: >In article <87dee7Fdj9U1(a)mid.individual.net>, > Phil Allison <phil_a(a)tpg.com.au> wrote: > >> "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. > >> 2. Neutral conductor isolation. > >> Most you see offered for sale in the USA are of the *second* kind. > > > >> .... Phil > >Surely an isolation transformer is just that - a one to one device with DC >isolation between windings. How it is subsequently configured is a >different matter. One use is where you can't be sure the line and neutral >of the supply are connected correctly - if they have a ground reference. > An isolation transfor is typically 1:1.1 in real life. Its acts as 1:1 with FULL load. Well all transformers are rated FULL LOAD. They really need to start calling these things different names. A regular "isolation transformer", and they should not be calling it that, is NOT ground isolated since the secondary is tied to ground. The purpose of this transformer is noise reduction, period, using an isolation transformer. Find another name. greg
From: Dave Plowman (News) on 11 Jun 2010 18:38 In article <huu496$2u1$2(a)usenet01.srv.cis.pitt.edu>, GregS <zekfrivo(a)zekfrivolous.com> wrote: > They really need to start calling these things different names. A > regular "isolation transformer", and they should not be calling it that, > is NOT ground isolated since the secondary is tied to ground. The > purpose of this transformer is noise reduction, period, using an > isolation transformer. In the UK the secondary of a (safety) isolating transformer is *not* tied to ground - that would entirely defeat the purpose. So someone needs to invent a new name for your type. ;-) -- *Funny, I don't remember being absent minded. Dave Plowman dave(a)davenoise.co.uk London SW To e-mail, change noise into sound.
From: Phil Allison on 11 Jun 2010 18:43 "Dave Plowman "Pommy Nutcase" > Phil Allison > >> "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. > >> 2. Neutral conductor isolation. > >> Most you see offered for sale in the USA are of the *second* kind. > > > Surely an isolation transformer is just that... ** Shame it is not in the USA - you steaming great fuckwit. .... Phil
From: Phil Allison on 11 Jun 2010 20:35 "Wild_Bill" >> MCM Electronics has one. ** One what ?? The question is not about the number but the nature of the item. .... Phil
From: Dave Plowman (News) on 12 Jun 2010 06:07
In article <87fshcF1r7U1(a)mid.individual.net>, Phil Allison <phil_a(a)tpg.com.au> wrote: > > Surely an isolation transformer is just that... > ** Shame it is not in the USA - you steaming great fuckwit. Given your supreme command of the English language it's not a surprise you don't understand what 'isolate' means... -- *I don't suffer from insanity -- I'm a carrier Dave Plowman dave(a)davenoise.co.uk London SW To e-mail, change noise into sound. |