| 摘要 |
An ignition coil provides a socket between an outer iron core and an excitation core, and to place a non-magnetic metal therein. A U-shaped non-magnetic metal is placed in the socket with the two inner sides wrapping two permanent magnets. The outer iron core contacts the excitation coil in a deeper of depth, so that it produces a best excitation effect and collects more magnetic power that increases the magnetization of the ignition coil, it not only minimizes the size but also increases the magnetization.
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