Abstract: A locking device for connecting a first housing to a second housing is provided, wherein the first housing and the second housing are arranged along a first direction. The locking mechanism includes a first hook, a second hook, a movable member, and a driving member. The first hook and the second hook are affixed to the first housing, and respectively have a first engaging recess and a second engaging recess. The first engaging recess and the second engaging recess are arranged along the first direction. The movable portion has an engaging portion. The driving member is connected to the second housing and the movable member, and is configured to drive the movable member to move relative to the second housing. When the first housing is affixed to the second housing via the locking mechanism, the engaging portion is accommodated in the first engaging recess.

Abstract: A photovoltaic-inverter heat-dissipation assembly is disclosure and includes a front housing-base, a rear cover, a first heat-generating device, a first fan, a second heat-generating device and a second fan. The rear cover and the front housing-base are combined to separately form a first heat-dissipation space and a second heat-dissipation space. The rear cover includes a first air-inlet, a second air-inlet and an air-outlet. The first air-inlet and the second air-inlet are in communication with the air-outlet through the first heat-dissipation space and the second heat-dissipation space, respectively. The first fan generates a first airflow, which enters through the first air-inlet, flows through the first heating-generating device accommodated in the first heat-dissipation space, and flows out through the air-outlet.

Abstract: A connector assembly includes a base, a wire unit, and a wire fixing unit. The base includes a body and two side wings. The two side wings are respectively rotatably connected to two opposite sides of the body, and each of the side wings includes a first fixing portion. The wire unit is located between the two side wings. The wire unit includes a connection seat disposed in the body, and various wires disposed in the connection seat and protruding from one side of the connection seat. The wire fixing unit includes two second fixing portions and various through holes, in which the through holes are located between the two second fixing portions, the two first fixing portions respectively clamp the two second fixing portions, and the wires correspondingly pass through the through holes.

Abstract: A photovoltaic inverter includes a casing, at least one circuit board located in the casing, a current sensor located on the at least one circuit board, an arc detector located on the at least one circuit board, a self-test coil located on the at least one circuit board, and at least one direct current input terminal located on the casing and connected to the at least one circuit board, wherein the self-test coil is configured to deliver a test signal to be sensed by the arc detector, and the direct current input terminal is configured to deliver a direct current through the arc detector, wherein the current sensor is configured to detect a magnitude of the direct current passing through the direct current input terminal.

Abstract: An EMI filter system includes a circuit board and a choke. The circuit board includes at least three capacitors. The choke mounts on the circuit board and includes a non-circular magnetic core and at least three windings. The at least three windings are wound on the non-circular magnetic core. The at least three capacitors are disposed adjacent to the choke, and first outlet ends of the at least three windings are respectively connected to the corresponding at least three capacitors.

Abstract: A locking device for connecting a first housing to a second housing is provided, wherein the first housing and the second housing are arranged along a first direction. The locking mechanism includes a first hook, a second hook, a movable member, and a driving member. The first hook and the second hook are affixed to the first housing, and respectively have a first engaging recess and a second engaging recess. The first engaging recess and the second engaging recess are arranged along the first direction. The movable portion has an engaging portion. The driving member is connected to the second housing and the movable member, and is configured to drive the movable member to move relative to the second housing. When the first housing is affixed to the second housing via the locking mechanism, the engaging portion is accommodated in the first engaging recess.

Abstract: An isolated converter includes an input circuit, a transformer, a first switch, a second switch and a snubber circuit. The input circuit includes at least two input capacitors, and is configured to provide an input voltage. A divider node is arranged between the at least two input capacitors. The transformer includes a primary winding and a secondary winding to generate an output voltage on the secondary winding according to the input voltage. The primary winding of the transformer is electrically connected between the first switch and the second switch. The snubber circuit is electrically connected between the first switch and the second switch, and forms a discharge path with the primary winding. The snubber circuit is configured to receive a reflected voltage from the secondary winding back to the primary winding, and the divider node is connected to the discharge path.