The present disclosure provides a complex protection device including: a laminate in which a plurality of sheets are laminated; a plurality of internal electrodes formed inside the laminate; an overvoltage protection part formed on at least a portion of the sheets; and an external electrode provided outside the laminate and connected to the internal electrode and the overvoltage protection part, wherein at least a portion of the plurality of sheets has a dielectric constant different from the other sheets.

The present invention discloses an electromagnetic shielding assembly including an electromagnetic interference shielding component including a plate body and a bending portion. An included angle is formed between the plate body and the bending portion, and the plate body and the bending portion cover an input socket of a power supply. The electromagnetic interference shielding component includes at least one grounding pin disposed on the plate body or/and the bending portion and configured to ground with and screw to a housing of the power supply, and a welding pin disposed on a side of the bending portion away from the plate body and electrically connected to an auxiliary circuit board. The electromagnetic interference shielding component provides functions of EMI shielding, lightning (current) discharging and fixture, which can simplify the structure, increase the discharging speed and time, and reduce the amount of disturbance of the large current instantaneous to the ground.

A filter for electromagnetic noise comprising: a printed circuit board (5) having conductor tracks, having a first side and having a second side opposite the first side; a first busbar (1), which is secured on the first side of the printed circuit board (5) and is electrically connected to at least one of the conductor tracks; and a second busbar (2), which is secured on the second side of the printed circuit board (5) and is electrically connected to at least one of the conductor tracks. The printed circuit board (5) is arranged between the first busbar (1) and the second busbar (2) for the insulation thereof.

A system and method for testing a network of electromagnetic interference components within a unit under test (UUT) of an aircraft, the UUT having at least one of an input port or an output port electrically coupled to the network, the method including: generating a radio frequency (RF) signal swept over a prescribed frequency range; applying the generated RF signal to the UUT; measuring a resultant signature at the at least one input port or output port; comparing the measured resultant signature with a baseline signature corresponding to the respective at least one input port or output port, the baseline signature representing normal operation of the UUT; and determining the UUT is out of specification when the measured signal and the baseline signature do not correspond to one another within a prescribed envelope.

The present invention discloses an electromagnetic shielding assembly including an electromagnetic interference shielding component including a plate body and a bending portion. An included angle is formed between the plate body and the bending portion, and the plate body and the bending portion cover an input socket of a power supply. The electromagnetic interference shielding component includes at least one grounding pin disposed on the plate body or/and the bending portion and configured to ground with and screw to a housing of the power supply, and a welding pin disposed on a side of the bending portion away from the plate body and electrically connected to an auxiliary circuit board. The electromagnetic interference shielding component provides functions of EMI shielding, lightning (current) discharging and fixture, which can simplify the structure, increase the discharging speed and time, and reduce the amount of disturbance of the large current instantaneous to the ground.

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 electrically conductive shield for a microwave transmission line-electrical connector interconnect region wherein the microwave transmission line is connected to the electrical connector. An elastic, dielectric material is disposed between opposing surfaces of the dielectric structure and the housing. An electrically conductive material is disposed on an outer surface of the elastic, dielectric material to provide an electrically conductive shield. The electrically conductive shield is disposed over the opposing surfaces of the dielectric structure and the housing.

A filter design configured to operate in the medium voltage range of 1000 to 5000 volts, provides protection against Electromagnetic Pulse/High Altitude Electromagnetic Pulse (EMP/HEMP) intentional electromagnetic interference pulses. The filter utilizes no oil filled components to preclude the catastrophic failures (explosions) during operation. Many of the components incorporated in the present design are suited to absorbing harmonics without failing. In addition to mitigating E1 and E2 pulses, the filter is resistant to line harmonics which have proved to cause filter failure in past designs. The filter provides EMP/HEMP conducted pulse protection for downstream electronics inside hardened shelters for medium and high voltage applications.

An EMC filter device for power electronics of an electric machine includes an electric conductor structure, a capacitor coupled to the conductor structure, and an inductor that cooperates with the conductor structure. The conductor structure has at least two separate conducting layers that are insulated from one another.

The device includes a body and a plurality of contact portions. The body is substantially planar. The plurality of contact portions are associated with the body so as to form ports. The plurality of contact portions are in electrical communication with the body. The port of each contact portion having an inside diameter substantially equal to ID1. The body and the contact portions are constructed of a conductive metallic material.