| 摘要 |
A trigger coil has a primary winding, a secondary winding, a package incorporating therein both the primary winding and the secondary winding, and a common terminal to which one end of the primary winding and one end of the secondary winding are connected. One end of the primary winding is connected to an exit portion of said common terminal at a side to be connected to the circuit substrate, and one end of the secondary winding is connected to an exit portion of said common terminal at a side apart from the circuit substrate.
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