Abstract: A hard disk drive fastening structure is used in an electronic device to fix a hard disk drive having a female connector. The hard disk drive fastening structure includes a printed circuit board (PCB) and a plurality of spring clips. The PCB includes a male connector. The spring clips fixed on the PCB in two substantially parallel rows and spaced from each other, so as to define a receiving space to receive the hard disk drive. Each spring clip includes a clamping portion and a buffer portion. The clamping portions clamp the hard disk drive collectively. The buffer portions are configured on the clamping portions apart from the receiving space to protect the hard disk drive against shocks. The female connector of the hard disk drive directly mates with the male connector on the PCB.

Abstract: A spring sheet assembly for electrically connecting a printed circuit board to ground includes a base and a conductive spring sheet. The conductive spring sheet includes a fixing portion and a resisting portion. The base defines a latching slot for detachably receiving the fixing portion of the spring sheet.

Abstract: An inverter (10) includes a circuit board (20) including a transformer (40) disposed thereon, and a shield cage assembly (60) for enclosing the transformer. The shield cage assembly includes an insulative cage (602) defining an inner receiving space (6028) for receiving the transformer, a first conductive cage (604) defining a first receiving space (6048) for receiving the insulative cage, and a second conductive cage (606) defining a second receiving space (6068) for receiving the first conductive cage. The shield cage assembly blocks EMI emitted by the transformer from interfering with electronic components out of the shield cage assembly, thus enabling the electronic components to perform more reliably.

Abstract: An inverter (10) includes a circuit board (20) including a transformer (40) disposed thereon, and a shield cage assembly (60) for enclosing the transformer. The shield cage assembly includes an insulative cage (602) defining an inner receiving space (6028) for receiving the transformer, a first conductive cage (604) defining a first receiving space (6048) for receiving the insulative cage, and a second conductive cage (606) defining a second receiving space (6068) for receiving the first conductive cage. The shield cage assembly blocks EMI emitted by the transformer from interfering with electronic components out of the shield cage assembly, thus enabling the electronic components to perform more reliably.