Abstract: An uninterruptible power system and an operation method thereof are provided. The uninterruptible power system comprises a DC-AC conversion circuit, a plurality of switches, a plurality of sensing units, a plurality of output ports and a control unit. Each output port is electrically coupled to an output terminal of the DC-AC conversion circuit sequentially through one of the sensing units and one of the switches. The control unit is configured to define members of at least one group from the output ports according to a system setting, and define which members of each group are non-critical output ports according to the system setting. The control unit is further configured to set, according to the system setting, at least one condition for all non-critical output ports in each group to simultaneously stop supplying power, and to accordingly control the operations of the corresponding switches.

Abstract: An off-line uninterruptible power system and two line-interactive uninterruptible power systems are provided. The off-line uninterruptible power system and one of the line-interactive uninterruptible power systems additionally adopt a transformer for supplying an AC output, with lower voltage level than a rated output voltage, to at least one electrical device (especially those with resistive load characteristic). The other line-interactive uninterruptible power system controls its automatic voltage regulating circuit to supply an AC output, with lower voltage level than a rated output voltage, to at least one electrical device (especially those with resistive load characteristic).

Abstract: An uninterruptible power system and an operation method thereof are provided. The uninterruptible power system comprises a DC-AC conversion circuit, a plurality of switches, a plurality of sensing units, a plurality of output ports and a control unit. Each output port is electrically coupled to an output terminal of the DC-AC conversion circuit sequentially through one of the sensing units and one of the switches. The control unit is configured to define members of at least one group from the output ports according to a system setting, and define which members of each group are non-critical output ports according to the system setting. The control unit is further configured to set, according to the system setting, at least one condition for all non-critical output ports in each group to simultaneously stop supplying power, and to accordingly control the operations of the corresponding switches.

Abstract: A power supplying device comprising a battery, a charging circuit and a DC-AC conversion circuit is provided. The charging circuit is electrically coupled to an AC power source and configured to charge the battery. The DC-AC conversion circuit is electrically coupled to the battery and configured to supply an AC output. When the power supplying device is powered on, both of the charging circuit and the DC-AC conversion circuit are enabled.

Abstract: An off-line uninterruptible power system and two line-interactive uninterruptible power systems are provided. The off-line uninterruptible power system and one of the line-interactive uninterruptible power systems additionally adopt a transformer for supplying an AC output, with lower voltage level than a rated output voltage, to at least one electrical device (especially those with resistive load characteristic). The other line-interactive uninterruptible power system controls its automatic voltage regulating circuit to supply an AC output, with lower voltage level than a rated output voltage, to at least one electrical device (especially those with resistive load characteristic).

Abstract: A power supplying device comprising a battery, a charging circuit and a DC-AC conversion circuit is provided. The charging circuit is electrically coupled to an AC power source and configured to charge the battery. The DC-AC conversion circuit is electrically coupled to the battery and configured to supply an AC output. When the power supplying device is powered on, both of the charging circuit and the DC-AC conversion circuit are enabled.

Abstract: A high frequency antenna device is applied to an operation frequency band within a range of 20-45 GHz. The high frequency antenna device includes a substrate, an antenna array and a processing chip both respectively disposed on two opposite sides of the substrate, and two connectors mounted on the substrate. The antenna array includes a plurality of antennas arranged in at least one row. Each antenna is a dual-polarized metal sheet configured to be selectively operated in a horizontal polarization and a vertical polarization. The operation frequency band has a central frequency corresponding to a wavelength. Central points of any two adjacent antennas have an interval within a range of 0.25-0.75 times of the wavelength. The processing chip is electrically coupled to the antennas and the two connectors. The two connectors electrically correspond to the horizontal polarization and the vertical polarization of each of the antennas.

Abstract: An antenna array of a high frequency antenna device includes a plurality of subarrays having the same arrangement. Each subarray includes antennas arranged in rows. Any two adjacent antennas of each of the subarrays respectively have two central points spaced apart from each other by a first interval, and any two adjacent antennas respectively belonging to two of the subarrays respectively have two central points spaced apart from each other by a second interval equal to the first interval. The antenna array is operated in at least one of operation modes, and the operation modes include: any subarray is wirelessly communicated with an external electronic device spaced apart from the corresponding subarray by a first distance; and at least two adjacent subarrays are jointly cooperated to wirelessly communicate with an external electronic device spaced apart from the corresponding subarrays by a second distance greater than the first distance.

Abstract: A high frequency antenna device is applied to an operation frequency band within a range of 20-45 GHz. The high frequency antenna device includes a substrate, an antenna array and a processing chip both respectively disposed on two opposite sides of the substrate, and two connectors mounted on the substrate. The antenna array includes a plurality of antennas arranged in at least one row. Each antenna is a dual-polarized metal sheet configured to be selectively operated in a horizontal polarization and a vertical polarization. The operation frequency band has a central frequency corresponding to a wavelength. Central points of any two adjacent antennas have an interval within a range of 0.25-0.75 times of the wavelength. The processing chip is electrically coupled to the antennas and the two connectors. The two connectors electrically correspond to the horizontal polarization and the vertical polarization of each of the antennas.

Abstract: An antenna array of a high frequency antenna device includes a plurality of subarrays having the same arrangement. Each subarray includes antennas arranged in rows. Any two adjacent antennas of each of the subarrays respectively have two central points spaced apart from each other by a first interval, and any two adjacent antennas respectively belonging to two of the subarrays respectively have two central points spaced apart from each other by a second interval equal to the first interval. The antenna array is operated in at least one of operation modes, and the operation modes include: any subarray is wirelessly communicated with an external electronic device spaced apart from the corresponding subarray by a first distance; and at least two adjacent subarrays are jointly cooperated to wirelessly communicate with an external electronic device spaced apart from the corresponding subarrays by a second distance greater than the first distance.

Abstract: An uninterruptable power supply system including a battery, a converting module, a charging circuit, a first switch, a power detecting circuit and a controlling module is provided. The converting module is coupled between a power inputting terminal and the battery, and connects to a load. The power inputting terminal is connected to a power. The battery is charged through the converting module or discharges to the load through the converting module. The charging circuit is coupled between the power inputting terminal and the battery for charging to the battery. The first switch is coupled between the charging circuit and the battery. The power detecting circuit is coupled to the battery for detecting a power value of the battery. The controlling module is coupled to the power detecting circuit, and control the ON/OFF state of the first switch for making the battery be charged or discharge according the power value or power supply state of the power.

Abstract: A volume control device suitable for an uninterruptible power system comprising a fan is provided. The volume control device comprises a user interface and a control circuit. The control circuit is electrically coupled to the fan and the user interface, and is used to receive a maximum operation volume setting value through the user interface. When the control circuit is ready to increase the rotation speed of the fan, it further determines whether the corresponding volume of the current rotation speed of the fan is less than the maximum operation volume setting value, and accordingly determines whether to adjust the rotation speed of the fan.

Abstract: A volume control device suitable for an uninterruptible power system comprising a fan is provided. The volume control device comprises a user interface and a control circuit. The control circuit is electrically coupled to the fan and the user interface, and is used to receive a maximum operation volume setting value through the user interface. When the control circuit is ready to increase the rotation speed of the fan, it further determines whether the corresponding volume of the current rotation speed of the fan is less than the maximum operation volume setting value, and accordingly determines whether to adjust the rotation speed of the fan.

Abstract: An uninterruptable power supply system including a battery, a converting module, a charging circuit, a first switch, a power detecting circuit and a controlling module is provided. The converting module is coupled between a power inputting terminal and the battery, and connects to a load. The power inputting terminal is connected to a power. The battery is charged through the converting module or discharges to the load through the converting module. The charging circuit is coupled between the power inputting terminal and the battery for charging to the battery. The first switch is coupled between the charging circuit and the battery. The power detecting circuit is coupled to the battery for detecting a power value of the battery. The controlling module is coupled to the power detecting circuit, and control the ON/OFF state of the first switch for making the battery be charged or discharge according the power value or power supply state of the power.

Abstract: An antenna structure includes a board unit and a coil unit. The board unit includes a metal board and an insulating board connected with or adjacent to the metal board, and the coil unit is disposed beside the same side of the metal board and the insulating board. In one embodiment, when one narrow side of the metal board and one narrow side of the insulating board connects with each other, the coil unit is disposed right under the commissure of the metal board and the insulating board. In addition, more than half or half of the area of the coil unit is covered by the insulating board, and less than half or half of the area of the coil unit is covered by the metal board. The current direction on the metal board and the current direction on the coil unit are the same as clockwise or counterclockwise.

Abstract: The present invention provides an antenna structure, using a metal radiation plate having at least one bending slot and a metal grounding plate, where a starting end of the metal radiation plate is located on an edge of the metal radiation plate. A feed plate and a connecting grounding plate are separately connected to two sides of a starting end of the slot, and two ends of the connecting grounding plate may be separately connected to the metal radiation plate and the metal grounding plate. The feed plate may be connected to a core wire of a coaxial cable, and a peripheral conductor of the coaxial cable is connected to the metal grounding plate, so that different resonant modes can be controlled. The antenna can achieve a broadband effect, thereby solving the problem of the metal shielding effect in a wireless communication product using a full-metal back cover.

Abstract: An antenna structure includes a board unit and a coil unit. The board unit includes a metal board and an insulating board connected with or adjacent to the metal board, and the coil unit is disposed beside the same side of the metal board and the insulating board. In one embodiment, when one narrow side of the metal board and one narrow side of the insulating board connects with each other, the coil unit is disposed right under the commissure of the metal board and the insulating board. In addition, more than half or half of the area of the coil unit is covered by the insulating board, and less than half or half of the area of the coil unit is covered by the metal board. The current direction on the metal board and the current direction on the coil unit are the same as clockwise or counterclockwise.

Abstract: A wire antenna comprises a main radiating element, a grounding element, a shorting element, and a coaxial cable. The said main radiating element and the said grounding element are linked by the said shorting element. A central conducting wire and an outer grounding conductor of the coaxial cable are electrically connected to the first and the second points on the said main radiating element and the said grounding element respectively. The main radiating element and the grounding element are all made of a single metal wire with compact size and low cost. The present invention is capable of single or dual-band operation for applications in WLAN devices.

Abstract: A method for controlling a parallel line-interactive uninterruptible power supply (UPS) system having multiple line-interactive UPSs parallelly connected, in which each line-interactive UPS has a switching element and a power output terminal connected to a load through the switching element, has a step of acquiring a switching status from the switching element when the switching element is switched to determine next switching time of the switching element so that the switching time is adjacent to a zero phase angle point of an input voltage cycle of the mains power. The method further has the switching elements of all line-interactive UPSs switched at the same time for all the line-interactive UPSs to evenly share the load, thereby preventing the line-interactive UPSs from being damaged due to concentrated load current on single line-interactive UPS arising from dramatically different switching time of the switching elements.

Abstract: A method for controlling uninterruptible and parallel power modules has steps of parallelly and unloadably connecting multiple power modules to a load, acquiring a number and a load wattage of the power modules connected to the load and an instant load ratio, calculating a simulated load ratio in accordance with a simulated number of the power modules and the load wattage, if the simulated load ratio is closer to a half load and the redundancy requirement is met, unloading at least one of the power modules connected to the load so that other power modules connected to the load can share the additional load released from the unloaded power modules and the load ratio and output efficiency of each power module connected to the load can be enhanced.