| 摘要 |
In a toroidal type deflection coil for use in a cathode ray tube of the type comprising a funnel shaped magnetic core and a coil wound about the core to create a magnetic field having different distributions at the fore and rear edges of the core, portions of the peripheries of the fore and rear edges of the core on which the coil is wound take the form of curves of different radii of curvature.
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