Abstract: A photovoltaic junction box includes a housing, a circuit board received in the housing, a plurality of metal brackets, and a plurality of bypass diodes. The plurality of metal brackets are secured to the circuit board, each of the plurality of metal brackets defines a receiving space receiving a spring sheet. The plurality of bypass diodes are respectively secured to the plurality of metal brackets and electrically connected to the circuit board. Each of a plurality of ribbons is clamped between the spring sheet and a corresponding metal bracket, and the ribbon directly and electrically contacts the corresponding metal bracket.

Abstract: A photovoltaic junction box includes a housing, a circuit board received in the housing, a plurality of metal brackets, and a plurality of bypass diodes. The plurality of metal brackets are secured to the circuit board, each of the plurality of metal brackets defines a receiving space receiving a spring sheet. The plurality of bypass diodes are respectively secured to the plurality of metal brackets and electrically connected to the circuit board. Each of a plurality of ribbons is clamped between the spring sheet and a corresponding metal bracket, and the ribbon directly and electrically contacts the corresponding metal bracket.

Abstract: A photovoltaic junction box includes a housing, a circuit board received in the housing, a plurality of metal brackets, and a plurality of bypass diodes. The plurality of metal brackets are secured to the circuit board. The plurality of bypass diodes are respectively secured to the plurality of metal brackets and electrically connected to the circuit board.

Abstract: A power device includes a substrate portion and a connector plug. The substrate portion defines a recess portion and a pair of receiving grooves, and includes at least one contact terminal. The connector plug includes a main body and a pair of conducting strips protruding outwardly from the main body. The main body defines at least one receiving slot. The pair of conducting strips are received in the receiving grooves correspondingly and the contact terminals slide into the corresponding receiving slots to accommodate the connector plug in the substrate portion. The main body and the recess portion are in a square shape respectively, so that the connector plug is capable of turning for 90 degrees relative to the substrate portion to be mounted on the substrate portion.

Abstract: A power device includes a substrate portion and a connector plug. The substrate portion defines a recess portion and a pair of receiving grooves, and includes at least one contact terminal. The connector plug includes a main body and a pair of conducting strips protruding outwardly from the main body. The main body defines at least one receiving slot. The pair of conducting strips are received in the receiving grooves correspondingly and the contact terminals slide into the corresponding receiving slots to accommodate the connector plug in the substrate portion. The main body and the recess portion are in a square shape respectively, so that the connector plug is capable of turning for 90 degrees relative to the substrate portion to be mounted on the substrate portion.

Abstract: A transformer with adjustable leakage inductance includes a first bobbin, a first winding, and a second winding. The first bobbin includes a first region and a second region. The second winding includes a first coil portion and a second coil portion. One of the first winding and the first coil portion of the second winding is wound around the first region of the first bobbin, and the other of the first winding and the first coil portion of the second winding is wound outside of the one wound around the first region of the first bobbin. The second coil portion of the second winding is wound around the second region of the first bobbin.

Abstract: An electrical device includes a conductive member and a voltage-resistant connector to be mounted to the metal enclosure. The conductive member such as a metal enclosure, includes a pair of clasping portions separated from each other. Each of the pair of clasping portions includes a pair of fixing arms. The voltage-resistant connector includes a main body to electrically connect a high-voltage output and a load of the electrical device, and an insulated member between the main body and the conductive member to increase a beeline distance between the voltage-resistant connector and the insulated member to avoid arcing therebetween. The insulated member defines a pair of holes corresponding to the clasping portions. The pair of fixing arms of each of the pair of clasping portion extends through a corresponding hole and clasps the insulated member to fix the voltage-resistant connector on the conductive member.

Abstract: An inverter includes a first circuit board (100) including a plurality of first conductor trace lines (102) for providing electronic connections among a plurality of electronic components disposed thereon, and a second circuit board (200) including a plurality of second conductor trace lines (202) for providing electronic connections among a plurality of electronic components disposed thereon. The second circuit board is disposed above the first circuit board, and is substantially perpendicular with and electrically connected to the first circuit board via at least one of the second conductor trace lines and at least one of the first conductor trace lines.

Abstract: A transformer (50) with adjustable leakage inductance includes a first bobbin (525), a first winding (521), and a second winding (522). The first bobbin includes a first region (B1) and a second region (B2). The second winding includes a first coil portion (522a) and a second coil portion (522b). One of the first winding and the first coil portion of the second winding is wound around the first region of the first bobbin, and the other of the first winding and the first coil portion of the second winding is wound outside of the one wound around the first region of the first bobbin. The second coil portion of the second winding is wound around the second region of the first bobbin. In the invention, the leakage inductance of the transformer is adjustable via adjusting the number of the coils of the first coil portion and the second coil portion.

Abstract: An electronic device includes an electronic component (40), a first printed circuit board (PCB) (100) and a second printed circuit board (200). The electronic component includes a first pin (A1) and a second pin (A2). The first PCB and a second PCB, respectively including first conductor trace lines (102) and second conductor trace lines (108) for electrically connecting the first pin and the second pin. The first PCB is disposed above the second PCB, and is parallel with the second PCB. The first PCB is electrically connected to the second PCB via at least one of the first conductor trace lines and the second conductor trace lines. A surface area of the first PCB is smaller than that of the second PCB.