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From: Cydrome Leader on 10 Jun 2010 17:57 GregS <zekfrivo(a)zekfrivolous.com> wrote: > In article <hur41d$6pu$3(a)reader1.panix.com>, Cydrome Leader <presence(a)MUNGEpanix.com> wrote: >>JW <none(a)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. >> >>I think the $100 and "good quality" exclude each other for a transformer >>that size. >> >>the smaller units as used with cash registers and POS systems tend to max >>out at 4 amps. >> >>is used is ok, look for stuff from acme, topaz, oneac, shape, powervar. >>powervar even had some interesting ones based off toroidal tranformers if >>you want the ooh and aah factor. > > Not cheap. Surplus Sales of Nebraska has some. I'd avoid surplus sales. Why pay twice new prices for old stuff when you don't have to? It's an interesting place browse, and I've been there in person, but the ripoff factor is pretty incredible.
From: Phil Allison on 10 Jun 2010 20:30 "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
From: bob on 10 Jun 2010 23:36 On 6/10/2010 4:57 PM, Cydrome Leader wrote: > GregS<zekfrivo(a)zekfrivolous.com> wrote: >> In article<hur41d$6pu$3(a)reader1.panix.com>, Cydrome Leader<presence(a)MUNGEpanix.com> wrote: >>> JW<none(a)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. >>> >>> I think the $100 and "good quality" exclude each other for a transformer >>> that size. >>> >>> the smaller units as used with cash registers and POS systems tend to max >>> out at 4 amps. >>> >>> is used is ok, look for stuff from acme, topaz, oneac, shape, powervar. >>> powervar even had some interesting ones based off toroidal tranformers if >>> you want the ooh and aah factor. >> >> Not cheap. Surplus Sales of Nebraska has some. > > I'd avoid surplus sales. Why pay twice new prices for old stuff when you > don't have to? > > It's an interesting place browse, and I've been there in person, but the > ripoff factor is pretty incredible. > > > Surplus sales has its place in the food chain. Its NOT a salvage place that just haphazardly throws stuff in piles, its all gone through sorted,labeled and cataloged. Lots of nice old ham gear stuff if you into it. Yea, most of it is not cheap. but try to find some of it from other sources. Some of the stuff they have will NEVER sell at the prices they have it at. Everyone knows how hot tube oscilloscopes are..... With the number of shops closing, i would wait for a going out of business sale or Ebay. bob
From: Jon Danniken on 11 Jun 2010 09:16 JW 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. You could always salvage a couple of microwave oven transformers and connect them back to back. Make sure and disconnect the secondaries from the cores though, of course. Jon
From: Phil Allison on 11 Jun 2010 09:18
"Jon Danniken" > > You could always salvage a couple of microwave oven transformers and > connect them back to back. Make sure and disconnect the secondaries from > the cores though, of course. ** Massively STUPID idea. Absolutely WILL NOT WORK. ...... Phil |