A radiofrequency filter utilizing a common mode choke both as a traditional common mode choke as well as the inductance in a low pass filter. Filter topology as well as component selection is optimized for wide band operation. Common mode chokes allow differential currents to pass with little attenuation while common mode currents are effectively presented with an inductance in the common current path. This inductance is used in a low pass filter configuration to present an even higher attenuation to common mode currents. The use of multiple chokes and/or differing core materials contributes to wider band operation without pronounced resonances. The capacitance used in the low pass filter is connected in a way as to reduce its effect on the data signals while still being effective in filtering.

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 power distribution device comprising a supporting structure having a power input connector mounted to the supporting structure, the power input connector having at least two input contacts and a power output connector mounted to the supporting structure, the power output connector having at least two output contacts corresponding to the at least two input contacts. A plurality of elongated filters are mounted inside the supporting structure, each one of the filters comprising a hollow casing filled with a mixture composed of quartz and bitumen emulsion, wherein a percent of bitumen emulsion of a total volume of the mixture is greater than 0% and no more than 50%. Wre connections define first electric paths from the input contacts to the elongated filters and second electric paths from the elongated filters to the output contacts.

The present disclosure relates to a broadband filter for confining or attenuating electromagnetic interference noise from one or more electrical signal sources, In an embodiment, the broadband filter comprises one or more filter stages electrically coupled by galvanic or by electromagnetic means to the one or more electrical signal sources for confining or attenuating conducted electromagnetic interference noise; one or more conductive shields electrically coupled by galvanic or by electromagnetic means to the electrical signal sources wherein the shields encapsulate the filter stages for confining or attenuating conducted and/or radiated electromagnetic interference noise; and one or more conductive partition layers to encapsulate the one or more filter stages such that the partition layers electromagnetically couple adjacent filter stages for a selected frequency range of the electromagnetic interference noise. The thickness of the conductive partition layers is chosen to control the degree of coupling.

An EMI filter arrangement includes a noise source, an input filter connected to the input of the noise source, and an output filter connected to the output of the noise source, the noise source, input filter and output filter provided in an electrically conductive electronics box, and an input filter capacitor electrically connecting the input filter to the electrically conductive electronics box and an output filter capacitor electrically connecting the output filter to the electrically conductive electronics box; the arrangement characterised by further comprising an intermediate reference plane provided in the electrically conductive electronics box, and an intermediate capacitor provided in the electrically conductive electronics box electrically connected between the intermediate reference plane and the electrically conductive electronics box, the input filter capacitor and the output filter capacitor being electrically connected to the box via the intermediate reference plane and the intermediate capacitor.

A wire harness including: a wire; an electromagnetic wave absorber provided on an outer circumference of a portion of the wire in a length direction of the wire; a protector that has an accommodation configured to accommodate the wire and accommodate the electromagnetic wave absorber; and a first fixing member configured to fix the electromagnetic wave absorber to the protector.

Provided is an electromagnetic interference mitigation apparatus including a power supply; a power cord; a power supply chassis encapsulating at least the power supply, the power supply physically isolated from the power cord; a low value resistor in electrical communication with at least the power cord and the power supply; and a capacitor disposed between the power supply chassis and an equipment chassis, wherein the equipment chassis encapsulates the power supply chassis, wherein the equipment chassis is disposed a distance from the power supply chassis, and wherein the capacitor is formed by the equipment chassis and the power supply chassis.

Provided herein are methods, devices, and systems that relate to electromagnetic interference (EMI) filters that, in certain embodiments, comprise: (a) a housing comprising a substantially enclosed first compartment and a substantially enclosed second compartment; (b) a first circuit card located in the first compartment of the housing that converts a signal transmitted on a conductive based medium to a signal transmitted on a non-conductive based medium; (c) a second circuit card located in the second compartment of the housing that converts a signal transmitted on a non-conductive based medium to a signal transmitted on a conductive based medium; (d) at least one non-conductive based medium that transmits a signal from the first circuit card to the second circuit card; and (e) at least one waveguide through which the non-conductive based medium passes from the first compartment to the second compartment.

A radiofrequency filter utilizing a common mode choke both as a traditional common mode choke as well as the inductance in a low pass filter. Filter topology as well as component selection is optimized for wide band operation. Common mode chokes allow differential currents to pass with little attenuation while common mode currents are effectively presented with an inductance in the common current path. This inductance is used in a low pass filter configuration to present an even higher attenuation to common mode currents. The use of multiple chokes and/or differing core materials contributes to wider band operation without pronounced resonances. The capacitance used in the low pass filter is connected in a way as to reduce its effect on the data signals while still being effective in filtering.

The present invention provides for an electronic isolator, or barrier, device arranged for receiving field wiring from a field element and further including connection means arranged to receive a surge element for providing surge functionality to the device, and to provide surge protection to the connectivity by way of the field wiring, the device arranged such that the surge element connects to the device and to the said field wiring by way of the said connection means so that operational connection/disconnection of the surge element to the device does not require disconnection of the field wiring from the device.