PURPOSE: To reduce a power-supply noise terminal voltage to the minimum value by a method wherein a noise electromotive force due to the induction of a noise electromagnetic wave, which is generated from an electronic circuit, is inhibited to reduce the induction of the noise electromagnetic wave to the minimum.

CONSTITUTION: A printed wiring pattern P6 and a printed wiring pattern P8 and a printed wiring pattern P7 and a printed wiring pattern P9 are provided into a state parallel to each other and a plurality of connecting holes HO are bored in each of these wiring patterns P6, P7, P8 and P9. The patterns P6 and P9 and the patterns P7 and P8 are electrically connected to each other through each conductor wire DS and the area of a loop, which is constituted of an across-the-line-capacitor ALC, the patterns P7 and P8, power-supply codes ACC1 and ACC2, a printed wiring pattern P10, a fuse F and the patterns P9 and P6, is divided unto two.