| 摘要 |
PROBLEM TO BE SOLVED: To enhance current detection accuracy, without compromising heat dissipation of components.SOLUTION: An electronic circuit device including a shunt resistor (22) also includes a dielectric substrate (21), first wiring patterns (26, 27) provided on the surface of the substrate (21), and a first shunt resistor (22a) provided on the surface of the substrate (21), and connected electrically with the first wiring patterns (26, 27). Furthermore, the electronic circuit device included second wiring patterns (36, 37) provided on the back of the substrate (21), a second shunt resistor (22b) provided on the back of the substrate (21), and connected electrically with the second wiring patterns (36, 37), and vias (24) penetrating the substrate (21) on the inflow side and outflow side of current, and electrically connecting the first wiring patterns (26, 27) and second wiring patterns (36, 37).SELECTED DRAWING: Figure 3 |
