Autotransformers have a single winding and, therefore, can not be used for isolation purposes.
73,
Jay/AF2C
At 01:55 PM 3/26/06 -0500, you wrote:
One word of caution. Some folks are under the impression that a variac also acts as an isolation transformer. It is not and offers no isolation at all, so if you are working with an AC/DC (transformerless) set, safety dictates the use of an isolation transformer with or without the variac.
73,
John, W4AWM
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