| 摘要 |
In a printed circuit board which has two layers with wiring patterns formed thereon and on which components of a booster circuit that boosts a voltage of an input power are mounted, within a plurality of wiring patterns which connect the input terminal of the input power to the terminal of a component to which the input power is supplied, patterns formed on the two layers are connected by a through hole formed near the input terminal and the terminal of the component. Accordingly, in the patterns to which a relatively large current flows upon receiving the input power, currents flowing to the patterns formed on the two layers are almost uniformed. For this reason, loss due to the wiring resistance in the patterns can be reduced.
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