Radio frequency amplifier (200) assembly with effective prevention of RF interference. The radio frequency amplifier comprises an electrically conductive housing (301) that defines an enclosed interior of the radio frequency amplifier assembly, an electrically conductive cooling plate (415) disposed inside the electrically conductive housing and having a first side and an opposite second side, the electrically conductive cooling plate being configured to divide the enclosed interior into a first enclosed region (501) and a second enclosed region (503), and a radio frequency signal processing circuit board (223) equipped with a radio frequency signal processing circuit, the radio frequency signal processing circuit board being positioned in the first enclosed region and disposed on the first side of the electrically conductive cooling plate, and a power supply module and a controller module positioned in the second enclosed region and disposed on the opposite second side of the electrically conductive cooling plate.

A carrier assembly for mounting equipment into a carrier slot includes an electro-magnetic interference (EMI) shield and an EMI finger. The EMI shield protects the mounted equipment from EMI. The EMI shield is formed in a first plane of the carrier assembly. The EMI finger protrudes from the EMI shield and is coupled to the EMI shield. The EMI finger is formed in a second plane perpendicular to the first plane. The EMI finger operates, when the carrier assembly is installed into the carrier slot, to couple the EMI shield to the carrier slot. The EMI finger, when viewed from a first direction that is perpendicular to both the first plane and the second plane, is formed in a tear-drop shape.

A connection structure includes a circuit board, an insulating member, a housing, and a conductive wire. The insulating member includes a first portion and a second portion. The first portion is fixed to the circuit board. The second portion faces the first portion. The second portion is fixed to the housing. The housing includes a grounded contact. The conductive wire electrically connects the circuit board and the housing while being wound around the insulating member. A shortest distance along a surface of the housing from a position where the conductive wire and the housing are connected to the contact is shorter than a shortest distance along a surface of the housing from the second portion of the insulating member to the contact.

A card holder for carrying a card and movable between card hiding, showing and protruding configurations. The card holder includes a casing defining a front aperture and a card slit, and a front cover for selectively covering the front aperture. In the card hiding configuration, the front cover obstructs the front aperture and the card is entirely contained in the casing. In the card showing configuration, the front cover is retracted from at least part of the front aperture and the card is entirely contained in the casing. In the card protruding configuration, part of the card protrudes from the casing through the card slit.

A modular system of medical article containers is used to form enclosures of selectable storage space. The containers are each RF shielded and include an interconnect wall for connecting to another container to form the enclosure. The interconnect walls have a complementary design. The interconnect seam of two containers includes an electrically conductive component that also interconnects the RF shields of the two containers together. The interconnect seam also includes a tortuous path seal for greater RF shielding of the enclosure. The walls of the containers include a substrate of non-electrically conductive material for weight reduction and an electrically conductive element that is coextensive with the substrate. One embodiment is a plastic substrate with a metallic mesh. The enclosure provides a Faraday cage about the interconnected containers. Enclosures of differing heights and sizes can be made, and they may be stacked or otherwise assembled.

A component grounding system according to one embodiment includes a case for accommodating a plurality of components, a direct current (DC) capacitor disposed on one side of the case and electrically connected to the case, and a bus bar, disposed between the case and the DC capacitor, for connecting the case and the DC capacitor, the bus bar representing an electrode, wherein each of the plurality of components may be connected to the bus bar.

A printing apparatus includes: a motor; a printing mechanism; a print processor; a connector; a substrate that transmits a signal received via the connector to the print processor, the print processor and the connector being mounted on the substrate; a plurality of metal plates that separate the substrate from the motor. The metal plates surround the substrate. The cable is coupled to the connector via a through-hole. The through-hole is covered with a metal cover.

A central compute unit, configured as a vehicle central compute unit, to a pocket module, to an electronic module, and to a printed circuit board, to a cooling blade, and to a main frame. The cooling blade for cooling an electronic module of a vehicle includes at least one connector for connecting to a liquid cooling system of the vehicle. A cooling line is provided for guiding a liquid coolant through the cooling blade for heat transfer, and a heat transfer area is provided for thermal coupling of the electronic module.

A junction box used for making electrical connections to a photovoltaic panel. The junction box has two chambers including a first chamber and a second chamber and a wall common to and separating both chambers. The wall may be adapted to have an electrical connection therethrough. The two lids are adapted to seal respectively the two chambers. The two lids are on opposite sides of the junction box relative to the photovoltaic panel. The two lids may be attachable using different sealing processes to a different level of hermeticity. The first chamber may be adapted to receive a circuit board for electrical power conversion. The junction box may include supports for mounting a printed circuit board in the first chamber. The second chamber is configured for electrical connection to the photovoltaic panel. A metal heat sink may be bonded inside the first chamber.

Methods and apparatus for acoustically and electronically isolating a smart speaker to prevent unauthorized persons from using the smart speaker microphones to eavesdrop and intrude into a personal space.