▎ 摘　　要

(CN216927556-U) NOVELTY - The utility model claims a passive radiating AC power supply for IT device, comprising: a power supply shell, at least one power unit set in the power supply shell and at least one internal heat conducting component; the inner heat conducting component is directly and/or indirectly connected to the inner side wall of the power supply shell, each power unit is connected with one or more inner heat conducting components in a heat transfer manner, the generated heat is introduced into the power supply shell through the inner heat conducting component. Using the method, the power supply shell can guide the received heat into the application environment of the IT device, without using any active radiating mode can realize the power supply of the IT device, obviously reduces the power consumption and cost of the power supply, reduces the working noise, increases the service life and reliable information of the AC power supply for the IT device. . DETAILED DESCRIPTION - Apparatus comprises a cryptocurrency mining rig for mining cryptocurrency. The cryptocurrency mining rig comprising an ac/dc power supply, where power supply comprises power-handling circuitry and a passive heat-dissipation system that passively dissipates heat generated by power-handling circuitry, and a mining machine that receives power from said ac/dc power supply. The passive heat-dissipation system comprises a housing that encloses power-handling circuitry and a thermal network that provides solid-state thermally-conductive pathways between power-handling circuitry and faces of housing, where power-handling circuitry comprises a power-handling unit that is connected to first and second faces of housing by corresponding first and second solid-state thermally-conductive pathways. The thermal network comprises a structure selected from the group consisting of a first structure, which comprises a multi-layer printed-circuit board comprising a set of heat-conducting layers and an electromagnetic-interference shield that is in thermal communication with printed-circuit board. The power-handling circuitry comprises a power unit that is surface mounted onto multi-layer printed-circuit board and that is in thermal communication with multi-layer set of heat-conducting layers. A second structure, which comprises a projection that is in thermal communication with housing, that projects into housing, and that has a recess. The power-handling circuitry comprises a power unit that is nestled in recess, and where recess conforms to power unit. A fourth structure, which comprises a perforated graphene layer having perforations filled with a thermally-conductive material. A fifth structure, which comprises a polymer-filled tank having walls in contact with housing, and where power-handling circuitry comprises a component immersed in tank. A sixth structure, which comprises a conducting strip inlaid into housing, conducting strip having a thermal resistance that is lower than that of housing. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a cryptocurrency mining rig. 8Cryptocurrency mining rig 10Mining machine 12AC/DC power supply 14Housing 16Faces of housing