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Old 17th February 2009, 09:47 PM   #11
HaLo6 is offline HaLo6  United States
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Or I guess I could mod my panamax and put this right after the mains IEC inlet and wire up one of the 120VAC lines into the rest of the system.
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Old 18th February 2009, 05:39 PM   #12
badman is offline badman  United States
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Problem here is that toroids are inherently high primary-secondary capacitance devices. These don't have the interwinding shield to correct this. So, that limits the ability to isolate from high frequencies.
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Old 18th February 2009, 06:58 PM   #13
udailey is offline udailey  United States
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Right. Thats why I suggested buying two and putting them back to back. This will give you the isolation you need. I am going to give this
http://www.lampizator.eu/AC%20FILTER/SILK/FILTER.HTML
a go and see if I can get rid of some noise I have on my AC lines. If it doesnt do the trick I will buy one of these transformers and put it in back of said circuit and see if that does it. If not I will, phew, get one more and do the back to back deal.
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Old 19th February 2009, 02:46 PM   #14
RyanW is offline RyanW  Canada
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Hey guys,

I've got a few 1.5kVA E type Isolation transformers available. I don't have a set price, but I am willing to trade or review any reasonable offers.

If someone out there is knowledgeable enough to put together a rock solid power conditioner schematic, perhaps we could trade knowledge for Iron/copper.
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Old 19th February 2009, 03:57 PM   #15
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Ryan,

As I mentioned above, I got a powervar silly cheap. I could take a look at it and get a better schematic, but essentially it just goes from AC input to AC output (with input ground and a ground from the trafo) and then runs through a few red drop capacitors and then to 6 AC outlets. Nothing really fancy, except the red drop caps.

Doug
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Old 19th February 2009, 08:33 PM   #16
badman is offline badman  United States
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Quote:
Originally posted by RyanW
Hey guys,

I've got a few 1.5kVA E type Isolation transformers available. I don't have a set price, but I am willing to trade or review any reasonable offers.

If someone out there is knowledgeable enough to put together a rock solid power conditioner schematic, perhaps we could trade knowledge for Iron/copper.

Hi Ryan:

I'd be happy to work with you to come up with a design around these, and/or trade for something you need, do you have any hifi bits you're looking for?

I could certainly use one or two, my power at my new (8 months ago) place is gawdawful.
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Old 22nd January 2012, 03:18 PM   #17
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Quote:
Originally Posted by udailey View Post
Check this out on EBAY!
http://cgi.ebay.com/ws/eBayISAPI.dll...m=330308625202
This deal is FANTASTIC.
Its a 120VAC to 115VAC toroid. Beautiful from the pics. Amperage is 8.25 and VA is 948.75 - his words.
Really? Could you ask for a better Isolation Transformer!
He wants $20 each and about 15 shipping in the US. Transformers like this at ANTEK sell for over $100.
Bump this article if you read it since no one is going to respond to this post so it doesnt get lost while his supplies last!!
Uriah
Udailey

I know this an old thread...

I bought two of these transformers (thanks for the suggestion) and just now I am starting to build a variable-isolated-AC power supply for my bench.
This will be (at start) nothing more than a variac followed by an isolation transformer. Latter I will add an ac-dc portion and a PIC controlled volt-amp meter.

Since I lost all the information on these transformers, I wonder if you still have it.
There are 4 wires on one side (white-blue-black-grey) and 3 wires (red-orange-red) on the other.
I am assuming that there are two 110V winding on the 4-wire side and a 0-110V-220 winding on the 3-wire side.
Does that sound about right?

I appreciate any information you can provide.

Cheers!
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Old 30th January 2012, 06:43 PM   #18
udailey is offline udailey  United States
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Let me search. I know I have them but where I am not sure.
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