Winding form for high voltage transformer

Details Winding form for high voltage transformer Winding form for high voltage transformer

H - Electricity

01

F

336/5

H01F 27/32 (2006.01) H01F 38/12 (2006.01)

Patent

CA 1277730

WINDING FORM FOR HIGH VOLTAGE TRANSFORMER ABSTRACT OF THE DISCLOSURE An automotive ignition system transformer in- cluding a ferromagnetic core, a primary coil and a sec- ondary coil. The secondary windings are wrapped on a tubular insulating winding form or bobbin with annular radial portions defining a plurality of annular coil chambers including a plurality of central chambers and at least one end chamber. The end chamber defines a spiral land that proceeds both axially toward the respective end and radially outward for three or more complete turns. The respective end turns of the coil are wrapped one turn of coil on each turn of the spiral land so that succes- sive turns of the end portions of the secondary coil are both axially and radially spaced from one another suffi- ciently to minimize arcing.

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