Apparatus and techniques for implementing an isolation chamber, and more particularly for implementing an EMF shielded isolation chamber. In various embodiments, an isolation tank includes a shell having an upper cover and a lower tank portion having one or more sidewalls connected to a floor. The lower tank portion is configured to hold liquid and the lower tank portion and the upper cover together define an interior chamber configured to receive a user. The isolation tank further includes a conductive shield associated with at least a portion of the shell and configured to shield at least a portion of the interior chamber from external electromagnetic fields. In various additional embodiments, the isolation tank includes a shield ground for electrically grounding the shield and/or a liquid ground for electrically grounding the liquid.

An electrical connection box includes: a box main body; an electric circuit body loaded into the box main body; a grounding member provided in the electric circuit body; a belt-like grounding metal plate extending from the grounding member to the outside of the box main body; a fixing bracket extending integrally with the box main body and including the grounding metal plate; and a bolt through hole formed through a tip end portion of the fixing bracket to electrically connect the grounding metal plate to a bolt to be inserted.

Methods and systems of suppressing ground faults. One system includes a power center including a transformer and a ground fault relay. The system also includes a first motor electrically connected to the power center. The system also includes a first variable speed drive connected to the first motor. The first variable speed drive is configured to vary the speed of the first motor. The system also includes a first common mode choke connected in a series-type connection between the power center and the first variable speed drive. The first common mode choke is configured to suppress a ground current induced by the first variable speed drive.

An electronic component includes a main body, an inner conductor inside the main body, one or more outer electrodes on a bottom surface of the main body and not provided on four side surfaces of the main body, and a shield electrode covering the four side surfaces of the main body and having a cylindrical or substantially cylindrical shape, the shield electrode not being physically connected to any of the one or more outer electrodes at a surface of the main body and being connected to the inner conductor at a surface of the main body.

Grounding a component, such as a thermal management system, of a battery pack via a coolant is provided. An apparatus can include a body forming a channel to convey coolant within a battery pack. The apparatus can include a conductor electrically coupled to a ground. The conductor can include a lead into the channel to ground the coolant.

The present disclosure provides a circuit board assembly and a display device. The circuit board assembly comprises a circuit board main body printed with a ground line which is grounded, and an electronic component and an electrostatic shielding cover defined on a side of the circuit board main body. The electrostatic shield cover covers the electronic component and electrically connects with the ground line.

A chemical above ground non-metallic storage tank has an inner tank grounding system to minimize a risk of a spark caused by a nearby lightning strike or a static discharge. An anchor is lowered via cable to a bottom of the tank. The top of the cable is secured to an anchor attached to a roof (or side) of the tank. A ground wire is run from the anchor to ground.

A module includes a wiring substrate; a component; a metal pin attached to a land electrode formed at one main surface and has a first extending portion extends from the one main surface, a second extending portion that is bent and extends from one end of the first extending portion on an opposite side from the one end surface, and a third extending portion that is bent and extends from one end of the second extending portion on an opposite side from the first extending portion to approach the one main surface; a sealing resin layer that covers the one main surface, the component, and the metal pin; and a shield layer that covers a side surface of the wiring substrate, a surface of the sealing resin layer, and the upper surface and the side outer surface of the metal pin.

A radio frequency filter includes a first conductive pattern; a second conductive pattern connected to a first point of the first conductive pattern and extended; a third conductive pattern connected to a second point of the first conductive pattern and extended to surround a portion of the second conductive pattern; a fourth conductive pattern; a fifth conductive pattern connected to a third point of the fourth conductive pattern and extended; and a sixth conductive pattern connected to a fourth point of the fourth conductive pattern and extended to surround a portion of the fifth conductive pattern. The first conductive pattern extends toward the fourth conductive pattern and the fourth conductive pattern extends toward the first conductive pattern. A distance between the first conductive pattern and the fourth conductive pattern is greater than or equal to a distance between the third conductive pattern and the sixth conductive pattern.

An assembly is provided which includes a package and a printed circuit board. The package includes a housing bounding a region and an acoustic sensor within the region. The housing includes a base with a first hole. The sensor is configured to generate signals indicative of sound received by the sensor through the first hole. The printed circuit board is in mechanical communication with the base and includes a second hole aligned with the first hole such that sound received by the second hole propagates through the first hole to the sensor. The printed circuit board further includes an electrically conductive layer, at least a portion of which extends across the second hole and is configured to allow the sound to propagate through the second hole and to at least partially shield the region containing the sensor from electromagnetic interference.