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From: "Phil Allison"
Subject: Re: basic transformer question
X-Newsreader: Microsoft Outlook Express 5.50.4522.1200
Date: Wed, 6 Nov 2002 14:43:17 +1100
NNTP-Posting-Date: Wed, 06 Nov 2002 14:33:48 EST
Organization: Telstra BigPond Internet Services (http://www.bigpond.com)
"Jack J." wrote in message news:3DC84BE0.E26E0E82@nbn.com...
> For you transformer experts out there: Except for low inefficiency and
> high cost, is there any reason a person can't use a transformer to
> convert 48VAC or 24VAC to 12VAC? Like using the secondary center tapped
> winding as an autotransformer, or hooking up 2 transformers back to
> back, 1 110 to 24 and another 110 to 12?
** The second idea of back to back trannys is not wise. AC supply
transformers are not meant to be reversible - especially the smaller E core
ones. It all has to do with regulation factor and core saturation but the
upshot is usually lots of voltage and power loss. Been there, tried that.
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