Abstract: A battery assembly includes a battery holding unit and a battery unit removably held by the battery holding unit. The battery unit includes a battery, a first engaging portion and a second engaging portion disposed on an end portion of the battery. The battery holding unit includes a holding member selectively engaging with the first engaging portion or the second engaging portion to hold the battery unit at a first position or a second position. When the holding member and the first engaging portion relatively move away from each other, the battery unit moves from the first position to the second position at which the holding member engages with the second engaging portion, and the second engaging portion is allowed to rotate along a surface of the end portion to disengage from the holding member and to remove the battery unit from the battery holding unit.

Abstract: A battery assembly includes a battery holding unit and a battery unit removably held by the battery holding unit. The battery unit includes a battery, a first engaging portion and a second engaging portion disposed on an end portion of the battery. The battery holding unit includes a holding member selectively engaging with the first engaging portion or the second engaging portion to hold the battery unit at a first position or a second position. When the holding member and the first engaging portion relatively move away from each other, the battery unit moves from the first position to the second position at which the holding member engages with the second engaging portion, and the second engaging portion is allowed to rotate along a surface of the end portion to disengage from the holding member and to remove the battery unit from the battery holding unit.

Abstract: A system, a server and a method for reproducing topological change using device events are provided. Using a server to collect device messages of network devices in a network environment and after determining and producing a device event that includes reproducing data based on the collected device messages, the device event is sent to a reproducing client. The reproducing client updates and displays topological change in the network in accordance with the reproducing data in the device event. The system and the method can use a GUI to display topological change in the network, and achieve the effect of understanding the change in linking state of network devices in the network intuitively.

Abstract: A parent-child leadframe type transformer includes a ferrite core module, a child leadframe and a parent leadframe. The parent leadframe has a first opening and a second opening on both ends. The length of the second opening is greater than the length of the first opening along the same axial direction. A containing space is defined between the first and second openings. The child leadframe has a coil winding slot and a through hole for installing the ferrite core module. The axial length of the child leadframe falls between the first and second openings, such that the child leadframe and the ferrite core module can be passed through the second opening, but limited by the first opening. The child leadframe, ferrite core module and parent leadframe are positioned to define a parent-child type transformer structure for reducing the overall height and complying with the safety regulation standards.