摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
A solar power system includes a plurality of photovoltaic (PV) modules and a control device. Each PV module includes a plurality of solar cell panels connected in series and a junction box. The junction box detects parameters of the corresponding PV module, generates a reporting signal, and transmits the reporting signal to the control device. The control device receives the reporting signals from the plurality of PV modules, compares a stored amount of the plurality of PV modules with an amount of the received reporting signals to determine if the plurality of PV modules are abnormal, and generates a state indication signal according to the determination. The control device further transmits the state indication signal to corresponding junction boxes according to identifications of the corresponding PV modules in the received reporting signals to make the corresponding junction boxes indicate states accordingly.
摘要:
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.
摘要:
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.
摘要:
A junction box electronically connected to a solar panel and connected to a plurality of solar cell strings connected in series includes a first bypass diode string and at least one second bypass diode. The first bypass diode string includes a plurality of first bypass diodes forwardly connected in series, and each of the plurality of first bypass diodes is connected to a corresponding one of the plurality of solar cell strings in parallel. The at least one second bypass diode connected to at least two neighboring solar cell strings in parallel, turns on to bypass the at least two neighboring solar cell strings upon the condition that the at least two neighboring solar cell strings are abnormal simultaneously.
摘要:
A flyback converter having a leading edge blanking (LEB) element keeps detecting whether or not primary-side current of the flyback converter reaches a predetermined threshold, beyond which the flyback converter could be damaged, in a predetermined LEB time corresponding to a leading edge of primary-side current. The flyback converter is turned off when the primary-side current exceeds the predetermined threshold.