Abstract: A method for determining a reduction factor of a bearing capacity of an axial load cylindrical shell structure is described. In the method, a depression defect is introduced in a manner of applying a radial disturbance load. Then, an influence rule of a depression defect amplitude of a single point to an axial load bearing capacity is analyzed by using numerical values; then, defect sensitivity analysis is performed on depression defects of multiple points; then, experiment design sampling is performed by using load amplitude values and load position distribution as design variables; and finally, the most disadvantageous disturbance load of the multiple points that limits the defect amplitude is searched for, and a reduction factor of the bearing capacity of the axial load cylindrical shell structure is determined.

Abstract: A method for determining a reduction factor of a bearing capacity of an axial load cylindrical shell structure relates to stability checking of main bearing strength thin-walled members of aerospace and architectural structures. Different from experiment experience-based conventional defect sensitivity evaluating method represented by NASA SP-8007, a depression defect is introduced in a manner of applying a radial disturbance load.

Abstract: A sequential control master-slave socket device includes at least one master socket, a plurality of slave socket, a plurality of switches, a load judgment device and a controller. Each master socket is coupled to an input power source. Inlet terminals of the switches are coupled to the input power source commonly and outlet terminals of the switches are respectively correspondingly coupled with the slave sockets for controlling whether the input power source is provided for each of the slave sockets. The load judgment device is coupled with each master socket for outputting a control signal according to an electrify state of a load connected with each master socket. The controller is coupled with the load judgment device and each switch to drive the switches one by one in a preset sequence under the control of the control signal.

Abstract: A two-stage power supply system includes a standby power circuit, a main power circuit, a driver and, a rectifier. Moreover, the standby power circuit is used to convert a utility AC (Alternating Current; AC) into a standby AC. The main power circuit is used to convert the utility AC into a main AC. Furthermore, the driver is coupled to the main power circuit so as to control whether or not the main power circuit outputs the main AC to the rectifier. Finally, the rectifier is coupled to the standby power circuit, the main power circuit, and a load, wherein the rectifier rectifies the standby AC alone for outputting a standby DC (Direct Current; DC) to the load, or rectifies an integrated AC of the standby AC and the main AC for outputting a supply DC to the load.

Abstract: A sequential control master-slave socket device includes at least one master socket, a plurality of slave socket, a plurality of switches, a load judgment device and a controller. Each master socket is coupled to an input power source. Inlet terminals of the switches are coupled to the input power source commonly and outlet terminals of the switches are respectively correspondingly coupled with the slave sockets for controlling whether the input power source is provided for each of the slave sockets. The load judgment device is coupled with each master socket for outputting a control signal according to an electrify state of a load connected with each master socket. The controller is coupled with the load judgment device and each switch to drive the switches one by one in a preset sequence under the control of the control signal.

Abstract: A master/slave outlet system includes at least one master outlet and at least one slave outlet. Moreover, the slave outlet is turned on to start the device connected to the slave outlet, while the master outlet supplies enough current to the device connected to the master outlet. Furthermore, the slave outlet is turned off to close the device connected to the slave outlet, while the device connected to the master outlet is shutdown or at sleep mode.

Abstract: A two-stage power supply system includes a standby power circuit, a main power circuit, a driver and, a rectifier. Moreover, the standby power circuit is used to convert a utility AC (Alternating Current; AC) into a standby AC. The main power circuit is used to convert the utility AC into a main AC. Furthermore, the driver is coupled to the main power circuit so as to control whether or not the main power circuit outputs the main AC to the rectifier. Finally, the rectifier is coupled to the standby power circuit, the main power circuit, and a load, wherein the rectifier rectifies the standby AC alone for outputting a standby DC (Direct Current; DC) to the load, or rectifies an integrated AC of the standby AC and the main AC for outputting a supply DC to the load.

Abstract: A master/slave outlet system includes at least one master outlet and at least one slave outlet. Moreover, the slave outlet is turned on to start the device connected to the slave outlet, while the master outlet supplies enough current to the device connected to the master outlet. Furthermore, the slave outlet is turned off to close the device connected to the slave outlet, while the device connected to the master outlet is shutdown or at sleep mode.