# US 2014/0191823 A1 · Noise filter device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0191823 A1 - Document ID: US20140191823A1 - Status: Published application - Kind: A1 - Application number: 13/817,654 - Filed: 2012-04-18 - Published: 2014-07-10 - Earliest claimed: 2012-04-18 - Assignees: Mitsubishi Electric Corporation - Inventors: Masahiro Otsubo - Web page: https://patentgrep.com/patent/US20140191823A1 ## CPC - H03H 1/0007: {of radio frequency interference filters} - H02M 1/126: {using passive filters} - H03H 7/0115: {comprising only inductors and capacitors (H03H7/075, H03H7/09, H03H7/12, H03H7/13 take precedence)} - H03H 7/0138: {Electrical filters or coupling circuits} - H03H 7/427: {Common-mode filters (H02J3/01 and H02M1/126 takes precedence)} - H03H 7/09: Filters comprising mutual inductance - H03H 2001/0085: {Multilayer, e.g. LTCC, HTCC, green sheets} - H03H: IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS (waveguides, resonators, lines or other devices of the waveguide type H01P) - H02M: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF (transformers H01F; dynamo-electric converters H02K47/00; controlling transformers, reactors or choke coils, control or regulation of electric motors, generators or dynamo-electric converters H02P) ## Abstract A noise filter includes a first substrate on which a filter input terminal, an input-side capacitor, a common-mode choke coil, and a filter output terminal are mounted and a second substrate on which an output-side capacitor and a ground capacitor are mounted. The first substrate is selected from a plurality of first substrates including a substrate in which a characteristic of at least one of an input-side capacitor and a common-mode choke coil is different, the second substrate is selected from a plurality of second substrates including a substrate in which a characteristic of at least one of an output-side capacitor and a ground capacitor is different, and the second substrate is attached to an end of the first substrate so that the filter output terminal is electrically connected to the output-side capacitor and to be substantially vertical to the first substrate. ## Claims ### Claim 1 A noise filter device that is inserted and connected between an alternating-current power supply and a motor drive device, the noise filter device comprising: a first substrate on which a filter input terminal, an input-side capacitor, a common-mode choke coil, and a filter output terminal are mounted; and a second substrate on which an output-side capacitor and a ground capacitor are mounted, wherein the first substrate is selected from a plurality of first substrates including a substrate in which a characteristic of at least one of an input-side capacitor and a common-mode choke coil is different, the second substrate is selected from a plurality of second substrates including a substrate in which a characteristic of at least one of an output-side capacitor and a ground capacitor is different, and the second substrate is attached to an end of the first substrate so that the filter output terminal is electrically connected to the output-side capacitor and to be substantially vertical to the first substrate. ### Claim 2 (depends on 1) The noise filter device according to claim 1, wherein the first substrates include a substrate whose dimension is different, and the second substrates include a substrate whose dimension is different. ### Claim 3 (depends on 1) The noise filter device according to claim 1, wherein the end of the first substrate and a main surface of the second substrate include a connection terminal and a connected terminal respectively corresponding to each other, the filter output terminal is electrically connected via the connection terminal and the connected terminal to the output-side capacitor, and the second substrate is mechanically connected via the connection terminal and the connected terminal to the end of the first substrate to be substantially vertical to the first substrate. ### Claim 4 (depends on 1) The noise filter device according to claim 1, wherein, on the first substrate, the filter input terminal is mounted on a first side of the common-mode choke coil, the filter output terminal is mounted on a second side that is opposite to the first side with the common-mode choke coil being interposed therebetween, the input-side capacitor is mounted on a third side of the common-mode choke coil, and the second substrate is attached to the end on a fourth side that is opposite to the third side with the common-mode choke coil being interposed therebetween. ### Claim 5 A noise filter device that is inserted and connected between an alternating-current power supply and a motor drive device, the noise filter device comprising: a first substrate on which a filter input terminal, a common-mode choke coil, and a filter output terminal are mounted; a second substrate on which an output-side capacitor and a ground capacitor are mounted; and a third substrate on which an input-side capacitor is mounted, wherein the first substrate is selected from a plurality of first substrates including a substrate in which a characteristic of a common-mode choke coil is different, the second substrate is selected from a plurality of second substrates including a substrate in which a characteristic of at least one of an output-side capacitor and a ground capacitor is different, the third substrate is selected from a plurality of third substrates including a substrate in which a characteristic of an input-side capacitor is different, the second substrate is attached to a first end of the first substrate so that the filter output terminal is electrically connected to the output-side capacitor and to be substantially vertical to the first substrate, and the third substrate is attached to a second end of the first substrate opposite to the second substrate so that the filter input terminal is electrically connected to the input-side capacitor and to be substantially vertical to the first substrate. ### Claim 6 (depends on 5) The noise filter device according to claim 5, wherein the first substrates include a substrate whose dimension is different, the second substrates include a substrate whose dimension is different, and the third substrates include a substrate whose dimension is different. ### Claim 7 (depends on 5) The noise filter device according to claim 5, wherein the first end of the first substrate and a main surface of the second substrate include a first connection terminal and a first connected terminal respectively corresponding to each other, the filter output terminal is electrically connected via the first connection terminal and the first connected terminal to the output-side capacitor, the second substrate is mechanically connected via the first connection terminal and the first connected terminal to the first end of the first substrate to be substantially vertical to the first substrate, the second end of the first substrate and a main surface of the third substrate include a second connection terminal and a second connected terminal respectively corresponding to each other, the filter input terminal is electrically connected via the second connection terminal and the second connected terminal to the input-side capacitor, and the third substrate is mechanically connected via the second connection terminal and the second connected terminal to the second end of the first substrate to be substantially vertical to the first substrate. ### Claim 8 (depends on 5) The noise filter device according to claim 5, wherein, on the first substrate, the filter input terminal is mounted on a first side of the common-mode choke coil, the filter output terminal is mounted on a second side that is opposite to the first side with the common-mode choke coil being interposed therebetween, the third substrate is attached to the second end on a third side of the common-mode choke coil, and the second substrate is attached to the first end on a fourth side that is opposite to the third side with the common-mode choke coil being interposed therebetween.