High voltage step-up dry power transformer and power supply unit comprising at least one such transformer
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United States of America Patent
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Dec 27, 2011
Grant Date -
Apr 8, 2010
app pub date -
Sep 25, 2009
filing date -
Sep 26, 2008
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A high voltage step-up power transformer includes at least one module which defines a lower voltage primary side and a higher voltage secondary side and which includes at least one primary winding and at least one secondary winding, wound concentrically around a ferromagnetic core body, the primary winding(s) being situated outwardly, and at least one shielding and/or insulating surface structure being arranged between the primary and secondary windings. The transformer (1) is characterized in that the outer primary winding (2) or winding parts is (are) made of at least one insulated high voltage cable and in that the at least one conductive intermediate surface structure (5) and/or the core body (4) are set at a referential potential which is a fraction of the output voltage or potential difference on the secondary side.
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