Abstract: An integrated circuit includes an inductor that includes a first set of conductors in at least a first metal layer, and a guard ring enclosing the inductor. The guard ring includes a first conductor extending in a first direction, a second conductor extending in a second direction, and a first set of staggered conductors coupled to a first end of the first conductor and a first end of the second conductor. The first set of staggered conductors includes a second set of conductors in a second metal layer, a third set of conductors in a third metal layer and a first set of vias coupling the second set of conductors with the third set of conductors. The third metal layer is above the second metal layer. All metal lines in the second metal layer that are part of the guard ring extend in the first direction.

Abstract: A photovoltaic inverter is provided, having a controller, an auxiliary power and a buffering element. The auxiliary power provides power to the controller. The buffering element is coupled between a photovoltaic panel and the auxiliary power such that the buffering element stores energy output from the photovoltaic panel first during a startup period, and then stops storing energy output from the photovoltaic panel and provides the stored energy to the auxiliary power, thereby performing a maximum power point tracking procedure on the photovoltaic panel during a first period following the startup period, and feeds energy output from the photovoltaic panel to the auxiliary power during a second period following the first period thereby continuously performing the maximum power point tracking procedure on the photovoltaic panel by the controller.

Abstract: A photovoltaic inverter is provided, having a controller, an auxiliary power and a buffering element. The auxiliary power provides power to the controller. The buffering element is coupled between a photovoltaic panel and the auxiliary power such that the buffering element stores energy output from the photovoltaic panel first during a startup period, and then stops storing energy output from the photovoltaic panel and provides the stored energy to the auxiliary power, thereby performing a maximum power point tracking procedure on the photovoltaic panel during a first period following the startup period, and feeds energy output from the photovoltaic panel to the auxiliary power during a second period following the first period thereby continuously performing the maximum power point tracking procedure on the photovoltaic panel by the controller.

Abstract: An improved multi-functional documentary clamping holder for computer typewriting comprises a support framework composed of a coupling base and a panel-clamping frame, wherein one end of the support framework is inserted in a panel, the other is united with a disposal platform or an adhering board for placing this invention beside or on a computer monitor alternatively. In virtue of two snap buttons pivotally disposed between a movable arm and the coupling base, two clamping pieces pivotally disposed in the movable arm, an insertion-disposed piece in the panel, and an indented groove, the panel can be moved vertically, horizontally, or turned around in a predetermined three-dimensional space.

Abstract: An assembly may be fastened to the shell of a computer monitor for holding copies. The assembly includes a supporting arm having a bottom end pivotally mounted to lugs of a mounting base and adjustably secured in position by a locating member. A face plate mount is pivotally connected to a top end of the supporting arm for holding the copies.