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The UKHA-ARCHIVE IS CEASING OPERATIONS 31 DEC 2024


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Re: buzz buzz buzz - I wonder why it does?



> Keith Doxey wrote:
>
> Thats an AUTO-TRANSFORMER.
>
> The 110V output is NOT isolated from the mains.
>
> A site transformer is fully isolated and centre tapped so each of the
> output leads is 55V with respect to earth.

All the stepdown transformers I have ever bought have being auto
transformers. Some places sell ones that are isolating, but they have no
connection to the secondary at all (Floating) - small ones are
wonderfull for solving ground loop problems with audio where cutting the
earth just seems wrong.

What exactly is a site transformer? How does it differ from a normal
(isolated) one?

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