A capacitor is disclosed that includes a plurality of electrically conductive capacitor layers wound around a winding center and a cooling channel, wherein the cooling channel is disposed between the capacitor layers, and wherein the cooling channel is electrically conductive. A system and a motor vehicle that includes the capacitors is also disclosed.

An electrical device (1) is provided, comprising an electrical high-frequency filter (9) and a shield (6) separating the filter from at least one further electrical component (9, 13) of the device, a signal conductor (17) which operably connects the filter (9) to the further component (9, 13) and traverses the shield (6) for transmitting a signal from the filter (9) to the component (9, 13) and a feedthrough capacitor system (19) being electrically arranged between the signal conductor (17) and the shield (6). The feedthrough capacitor system (19) comprises, in particular being formed essentially by, a plurality of surface mount capacitors (41) electrically arranged between the signal conductor (17) and the shield (6), the surface mount capacitors (41) in particular being surface mounted on a circuit board (11), which may be a printed circuit board.

An electrical device (1) is provided, comprising an electrical high-frequency filter (9) and a shield (6) separating the filter from at least one further electrical component (9, 13) of the device, a signal conductor (17) which operably connects the filter (9) to the further component (9, 13) and traverses the shield (6) for transmitting a signal from the filter (9) to the component (9, 13) and a feedthrough capacitor system (19) being electrically arranged between the signal conductor (17) and the shield (6). The feedthrough capacitor system (19) comprises, in particular being formed essentially by, a plurality of surface mount capacitors (41) electrically arranged between the signal conductor (17) and the shield (6), the surface mount capacitors (41) in particular being surface mounted on a circuit board (11), which may be a printed circuit board.

A multilayer electronic device may include a plurality of dielectric layers stacked in a Z-direction that is perpendicular to an X-Y plane. The device may include a first conductive layer overlying one of the plurality of dielectric layers. The multilayer electronic device may include a second conductive layer overlying another of the plurality of dielectric layers and spaced apart from the first conductive layer in the Z-direction. The second conductive layer may overlap the first conductive layer in the X-Y plane at an overlapping area to form a capacitor. The first conductive layer may have a pair of parallel edges at a boundary of the overlapping area and an offset edge within the overlapping area that is parallel with the pair of parallel edges. An offset distance between the offset edge and at least one of the pair of parallel edges may be less than about 500 microns.

An electronic device is provided that includes a board equipped with a pair of differential transmission lines that each have an opening extending between two line terminals. Moreover, the device includes a capacitor module that includes a support and two capacitors that each have two capacitor terminals, respectively, connected to the two line terminals of one line of the pair of transmission lines. In addition, the support includes a separating region between the two capacitors that has at least one cavity disposed between the two capacitors.

An electrical device for a converter has at least one capacitor having a first connection and a second connection, a first busbar and a second busbar is disclosed. A respective busbar has a greater extension along a transverse direction than along a longitudinal direction, and has a greater extension along the longitudinal direction than along a vertical direction. The respective busbar has a first surface and a second surface which are opposite one other with respect to the vertical direction. The device also has a first contact-connection device electrically conductively contact-connected to the first connection and via which the first connection is electrically conductively connected to the first busbar, and a second contact-connection device electrically conductively contact-connected to the second connection via which the second connection is electrically conductively connected to the second busbar. The busbars delimit a connection space in the vertical direction for connecting a semiconductor power unit.

A bus bar for a plurality of capacitor elements having an equal impedance includes a positive electrode bus bar and a negative electrode bus bar. The positive electrode bus bar and the negative electrode bus bar each includes a main bus bar and branch bus bars. The main bus bar is electrically connected to an electric circuit having a switching element. First ends of the branch bus bars are connected to the main bus bar at different positions, and second ends of the branch bus bars are connected to the capacitor elements. The branch bus bars are configured so that an impedance between the first end and the second end reduces as an impedance between a connecting portion of the main bus bar to the electric circuit and a connecting portion of the first end of the branch bus bar to the main bus bar increases.

A bus bar for a plurality of capacitor elements having an equal impedance includes a positive electrode bus bar and a negative electrode bus bar. The positive electrode bus bar and the negative electrode bus bar each includes a main bus bar and branch bus bars. The main bus bar is electrically connected to an electric circuit having a switching element. First ends of the branch bus bars are connected to the main bus bar at different positions, and second ends of the branch bus bars are connected to the capacitor elements. The branch bus bars are configured so that an impedance between the first end and the second end reduces as an impedance between a connecting portion of the main bus bar to the electric circuit and a connecting portion of the first end of the branch bus bar to the main bus bar increases.

A capacitor assembly comprises a plurality of capacitor elements (e.g., four or more capacitor elements) each having a first end surface and a second end surface defining a first polarity terminal and a second polarity terminal, respectively. The plurality of capacitor elements are arranged in at least one stacked pair with a first polarity terminal of a first capacitor element in each stacked pair being opposed to a first polarity terminal of a second capacitor element in such stacked pair. The plurality of capacitor elements in this aspect are contained in a housing. A first polarity bus bar and a second polarity bus bar are electrically connected to the plurality of capacitor elements. The plurality of capacitor elements may be connected in parallel.

A capacitor assembly comprises a plurality of capacitor elements (e.g., four or more capacitor elements) each having a first end surface and a second end surface defining a first polarity terminal and a second polarity terminal, respectively. The plurality of capacitor elements are arranged in at least one stacked pair with a first polarity terminal of a first capacitor element in each stacked pair being opposed to a first polarity terminal of a second capacitor element in such stacked pair. The plurality of capacitor elements in this aspect are contained in a housing. A first polarity bus bar and a second polarity bus bar are electrically connected to the plurality of capacitor elements. The plurality of capacitor elements may be connected in parallel.