| 摘要 |
PURPOSE:To improve the productivity of a high frequency coil by providing a first printed coil formed by spirally winding and a second spiral printed coil formed in a lattice shape or partly in a shortcircuit conductor, and connecting the coils in series, thereby mechanizing the regulation of the inductance of the coils. CONSTITUTION:A first printed coil formed by spirally winding and a spiral printed coil 2 formed in a lattice shape or partly in a shortcircuit conductor are provided, connected in series, and the conductor 3 of the second coil 2 is cut, thereby regulating the inductance of the coil. Thus, the regulation of the inductance of a high frequency coil in an FM receiver or a TV receiver can be mechanized by a laser trimming unit or a sandblast trimming unit, thereby remarkably improving the productivity.
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