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An electrical device that interfaces balanced and unbalanced lines without disturbing each line's impedance.

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Using AC/DC transformer to step down voltage or as antenna balun

It is suitable for AC mains/grid supplies but can't be used as a radio balun. You need a transformer design suited for the radio frequencies you intend to use it for. … (Other types of balun are possible at VHF and higher frequencies.) …
Graham Nye's user avatar
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