Hitachi Astemo Ltd.

Toshiaki Takai

Hideyuki Sakamoto

Masahiro Toyama

Shigenobu Komatsu

Tomoyuki Takada

Kiyoharu Ozaki

A circuit for EMCin a power input circuit includes at least two wirings of a high-potential-side wiringand a low-potential-side wiringhaving different potentials and formed on a circuit board, a cutoff parthaving one end connected to the high-potential-side wiring, a capacitorconnected between the other end of the cutoff partand the low-potential-side wiring, a cutoff parthaving one end connected to the high-potential-side wiring, a capacitorconnected between the other end of the cutoff partand the low-potential-side wiring, and a capacitorconnected between a connection partwhere the cutoff partand the capacitorare connected and a connection partwhere the cutoff partand the capacitorare connected.

Vehicle-mounted electronic control device

An electronic control device comprising: a housing having conductivity; a circuit board that is arranged in the housing and has a first electronic component mounted on a mounting surface; an external connection portion that is electrically connected to the circuit board and is connectable to a device outside the housing; and a duplexing member that has conductivity and is arranged between an inner surface of the housing and the mounting surface of the circuit board, in which the duplexing member forms a cutout portion to avoid contact between the duplexing member and the first electronic component, and further forms a partition portion that partitions the external connection portion between the housing and the circuit board.

Electronic control device

Leakage of radio-frequency radiation noise radiated from a noise source to the outside is suppressed. An electronic control deviceincludes a printed boardhaving signal grounds, and, and a frame ground, a housingaccommodating the printed board, and a connectormounted on the printed board. The electronic control deviceincludes a first coupling portionthat AC-couples the signal groundwith the frame groundand a second coupling portionthat electrically couples the frame groundwith the housing, and the first coupling portionand the second coupling portionare provided between the connectorand an electronic circuiton the printed board

Growing community of inventors

Hitachinaka, Japan

Toshiaki Takai