| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a mounting structure of a current detecting resistor capable of improving current detection accuracy, concerning the current detecting resistor for detecting a heavy current including up to a high frequency component such as a current detecting circuit of a switching power circuit. SOLUTION: Wiring patterns 17, 18 on a board to be connected to voltage detection terminals 15, 16 of this current detecting resistor are extended along a route of a current to be measured of a resistor 11, while keeping electric insulation with the resistor 11 of the current detecting resistor, and drawn out in the orthogonal direction with the route of the current to be measured. In the current detecting resistor wherein a part of electrodes 12, 13 of the current to be measured is used as the voltage detection terminals 15, 16, connections 15, 16 between the voltage detection terminal part of the electrodes of the current to be measured and the patterns on the board are arranged separately mutually in the opposite directions from the center axis in the direction along the current to be measured of the resistor 11 of the current detecting resistor.</p> |
