Abstract: A solar electricity generating system includes a solar cell and a DC/AC converter coupled to the cell. The first proposed method includes the steps of: (a) adjusting an output current of the DC/AC converter; (b) sensing an output voltage variation of the solar cell; (c) adjusting the output current in a direction of the variation; and (d) repeating the steps (a) to (c). The second proposed method includes the steps of: (a) adjusting a DC output voltage of the solar cell; (b) sensing an output current amplitude variation of the DC/AC converter; (c) adjusting the output voltage in a direction of the variation; and (d) repeating the steps (a) to (c).

Abstract: A tool handle mounting structure including a tool head having a fixed coupling cap, a handle having a tubular front end fastened to the coupling cap by a screw joint, and a sleeve fixedly mounted around the tubular front end to hold a sliding lock, wherein when the sliding lock is moved forwards after the handle is coupled to the coupling cap of the tool head, the handle is locked; when the sliding lock is moved backwards, the handle is unlocked, and can be turned reversely and disconnected from the coupling cap of the tool head.