Patent ID: 8952766
Filing Date: 2015-02-10
Classification: H02K,H02M,H03H,H05K

Abstract:
1. A control board to which a low-voltage power system and a high-voltage power system, are inputs, comprising a low-voltage circuit and a high-voltage circuit, and a low-voltage-side ground region and a high-voltage-side ground region that are formed in correspondence with the low-voltage and high-voltage circuits, respectively, wherein frame ground regions are provided at a plurality of positions on the control board, a plurality of communication line patterns connected to the low-voltage circuit are respectively connected to both the low-voltage-side ground region and the frame ground regions through capacitance elements with various capacitances, and wherein the capacitance elements that are connected between the plurality of communication line patterns and the frame ground regions have capacitances of 0.1 μF or more, and the capacitance elements that are connected between the communication line patterns and the low-voltage-side ground region have capacitances on the order of pFs.