Abstract: A wind turbine system includes a wind turbine and switching devices. Each switching device is for stabilizing an electric output of a coil of the wind turbine, and includes a voltage converter circuit, a switch circuit electrically connected between the voltage converter circuit and an output interface, and a controller circuit. The controller circuit is configured to calculate an input electric power of input electricity into the voltage converter circuit, to calculate an output electric power of output electricity outputted by the voltage converter circuit, and to control the switch circuit to operate in one of a closed state and an open state according to the input electric power and the output electric power.

Abstract: A switching device for stabilizing an electric output of a solar panel is provided, and includes a voltage converter circuit, a switch circuit connected between the solar panel and the voltage converter circuit, and a control unit. The voltage converter circuit converts input voltage and current received from the solar panel through the switch circuit into output voltage and current. The control unit calculates an input electric power and an output electric power based on values of the input voltage and current and values of the output voltage and current, and controls the switch circuit to switch between a closed state and an open state according to the input electric power and the output electric power.

Abstract: A wind turbine system includes a wind turbine and switching devices. Each switching device is for stabilizing an electric output of a coil of the wind turbine, and includes a voltage converter circuit, a switch circuit electrically connected between the voltage converter circuit and an output interface, and a controller circuit. The controller circuit is configured to calculate an input electric power of input electricity into the voltage converter circuit, to calculate an output electric power of output electricity outputted by the voltage converter circuit, and to control the switch circuit to operate in one of a closed state and an open state according to the input electric power and the output electric power.

Abstract: A switching device for stabilizing an electric output of a solar panel is provided, and includes a voltage converter circuit, a switch circuit connected between the solar panel and the voltage converter circuit, and a control unit. The voltage converter circuit converts input voltage and current received from the solar panel through the switch circuit into output voltage and current. The control unit calculates an input electric power and an output electric power based on values of the input voltage and current and values of the output voltage and current, and controls the switch circuit to switch between a closed state and an open state according to the input electric power and the output electric power.

Abstract: A wireless control sensing device is disclosed. The sensing device has an instruction receiving unit and at least one sensing unit. The instruction receiving unit wirelessly receives an instruction signal, and then the sensing unit adjusts a sensing parameter of the sensing unit according to the received instruction signal.

Abstract: A channel selection method and electronic device thereof are provided. In the channel selection method, usable channels of a second communication protocol are selected according to a used channel number of a first communication protocol, and one of the usable channels is selected according to the numbers of wireless access points, thereby preventing or alleviating the interference between the first communication protocol and the second communication protocol.

Abstract: A channel selection method and electronic device thereof are provided. In the channel selection method, usable channels of a second communication protocol are selected according to a used channel number of a first communication protocol, and one of the usable channels is selected according to the numbers of wireless access points, thereby preventing or alleviating the interference between the first communication protocol and the second communication protocol.

Abstract: A miniaturized multilayer hybrid-phase signal splitter circuit is proposed, which is fully equivalent in function to a conventional rat-race coupler, but with a specialized circuit layout structure that allows its IC implementation to be more miniaturized than the conventional rat-race coupler. The proposed hybrid-phase signal splitter circuit features the use of a multilayer substrate for the layout of six transmission lines in such a manner that the transmission lines in the middle layer are inductively coupled to the transmission lines on the overlying layer as well as the transmission lines on the underlying layer to form a Marchand balun. In IC implementation, the required layout area is only about 10% of the layout area for the conventional rat-race coupler.

Abstract: A miniaturized multilayer hybrid-phase signal splitter circuit is proposed, which is fully equivalent in function to a conventional rat-race coupler, but with a specialized circuit layout structure that allows its IC implementation to be more miniaturized than the conventional rat-race coupler. The proposed hybrid-phase signal splitter circuit features the use of a multilayer substrate for the layout of six transmission lines in such a manner that the transmission lines in the middle layer are inductively coupled to the transmission lines on the overlying layer as well as the transmission lines on the underlying layer to form a Marchand balun. In IC implementation, the required layout area is only about 10% of the layout area for the conventional rat-race coupler.

Abstract: The invention relates to adjustment of optical output power and extinction ratio. A laser cuts resistors to obtain a desired resistance value, thereby adjusting an automatic power control loop circuit. Since several cuttable resistors and other components can be welded with Surface Mount Technology (SMT), process is simplified, the stability of products is increased and the production costs are reduced.

Abstract: A optical polarization controller for receiving an input light beam and outputting a transverse magnetic (TM) polarized light beam or transverse electric (TE) polarized light beam is provided. The optical polarization controller includes a polarization splitting device and a half-wave plate. The polarization splitting device is provided for receiving the input light beam and outputting a first light beam and a second light beam. In addition, the half-wave plate is switchably disposed in the light path of the first light beam or the second light beam.

Abstract: A grinding control unit installed in a tool bit grinder and adapted to control the feeding of a bit relative to a grinding wheel of a grinding unit of the tool bit grinder, the grinding control unit including a U-shaped support, a chuck adapted to hold the bit to be ground, a feeder adapted to control feeding stroke of the bit a swinging control mechanism adapted to control swinging stroke of the bit when feeding the bit, enabling two lips of the tip of the bit to be ground, a horizontal displacement control mechanism adapted to control the depth of bit feeding stroke, enabling the spur of the bit to be well ground.

Abstract: A drill bit grinding machine including a grinding control device controlled to move the drill bit, permitting it to be ground by the grinding wheel, the grinding control device including a mounting base, a coupling block pivoted to the mounting base to hold a bit holder, a side board coupled to the coupling block, a driven gear controlled to turn the bit holder, an axial movement control block controlled to move the bit holder axially, a tilt angle control device controlled to adjust the tilt angle of the bit holder, and a drive gear controlled to turn the driven gear and the tilt angle control device.