Abstract:
The power supply device is configured on an aircraft and includes a secondary battery, a transformer, a fuel cell and a bypass switch. The transformer is electrically connected between the secondary battery and the aircraft. The fuel cell is suitable for providing a first output current to the aircraft. The bypass switch is connected in parallel with the transformer. The transformer has a first output voltage set value. When a first output terminal voltage of the fuel cell is lower than the first output voltage set value and the bypass switch is in a non-conducting state, a second output current of the secondary battery is provided to the aircraft via the transformer. When the first output terminal voltage is lower than the first output voltage set value and the bypass switch is in a conducting state, the second output current is provided to the aircraft via the bypass switch.
Abstract:
A method and a system for digital direct imaging, an image generating method and an electronic device are provided. The method for digital direct imaging includes: obtaining a first image of a first format; converting the first image into a second image of a second format, wherein the second image includes a contour description; generating a correction parameter according to at least one mark on a substrate; correcting the second image according to the contour description and the correction parameter; and performing a rasterization operation on the corrected second image and imaging the second image processed by the rasterization operation on the substrate by an exposure device.
Abstract:
A non-violate memory device and a control method thereof are provided. The non-violate memory device includes a flip-flop, a retention cell and a memory cell. The flip-flop includes an output inverter. The flip-flop generates a second data according to a first data and a retention signal. The retention cell is coupled to the output inverter of the flip-flop. The retention cell temporarily stores the second data when the retention signal is enabled. During the period that retention signal is enabled, the memory cell stores the second data temporarily stored by the retention cell. Thus, another operation mode of the non-violate memory device is provided to save more power.
Abstract:
A power supply includes fuel cell, secondary battery, power converter, current detecting unit and control unit. The power converter couples the fuel cell with the secondary battery, and is adapted to convert current outputted by the fuel cell into output current. The current detecting unit couples the power converter with the secondary battery and adapted to detect charging current of the output current transferred to the secondary battery. The control unit couples the current detecting unit with the power converter and is adapted to: when the charging current is greater than a charging current upper-limit-setting value of the secondary battery, a down-adjustment signal is outputted to the power converter to reduce the output current; and when the charging current is less than the charging current upper-limit-setting value, an up-adjustment signal is outputted to the power converter to increase the output current.
Abstract:
A control system and a control method of fuel cell stacks are provided. The control system includes a set of fuel cell stacks, a secondary battery, a monitoring device, and a control device. Each fuel cell stack has a power output that can be independently started up or shut down. The secondary battery is connected to power output terminals of the fuel cell stacks via a power transmission path. The monitoring device is configured to monitor an electrical parameter of the power transmission path. The control device receives an electrical parameter signal from the monitoring device, and outputs a control signal to shut down or start up the power output of at least one of the fuel cell stacks if the electrical parameter's value is higher than a predetermined upper limit or lower than a predetermined lower limit.
Abstract:
A control system and a control method of fuel cell stacks are provided. The control system includes a set of fuel cell stacks, a secondary battery, a monitoring device, and a control device. Each fuel cell stack has a power output that can be independently started up or shut down. The secondary battery is connected to power output terminals of the fuel cell stacks via a power transmission path. The monitoring device is configured to monitor an electrical parameter of the power transmission path. The control device receives an electrical parameter signal from the monitoring device, and outputs a control signal to shut down or start up the power output of at least one of the fuel cell stacks if the electrical parameter's value is higher than a predetermined upper limit or lower than a predetermined lower limit.
Abstract:
A method and a system for digital direct imaging, an image generating method and an electronic device are provided. The method for digital direct imaging includes: obtaining a first image of a first format; converting the first image into a second image of a second format, wherein the second image includes a contour description; generating a correction parameter according to at least one mark on a substrate; correcting the second image according to the contour description and the correction parameter; and performing a rasterization operation on the corrected second image and imaging the second image processed by the rasterization operation on the substrate by an exposure device.
Abstract:
An adaptive power supply system for an unmanned vehicle and an operation method thereof are provided. The adaptive power supply system includes an adaptive power supply, a battery, a sensing circuit, and a power dispatch controller. The output terminal of the adaptive power supply powers the load circuit of the unmanned vehicle. The battery is coupled to the output terminal of the adaptive power supply. The sensing circuit senses the output of the output terminal of the adaptive power supply and the output of the battery. The power dispatch controller controls the output of the output terminal of the adaptive power supply according to the sensing result of the sensing circuit. The power dispatch controller determines whether one or both of the adaptive power supply and the battery power the load circuit by adjusting the output of the adaptive power supply.
Abstract:
An adaptive power supply system for an unmanned vehicle and an operation method thereof are provided. The adaptive power supply system includes an adaptive power supply, a battery, a sensing circuit, and a power dispatch controller. The output terminal of the adaptive power supply powers the load circuit of the unmanned vehicle. The battery is coupled to the output terminal of the adaptive power supply. The sensing circuit senses the output of the output terminal of the adaptive power supply and the output of the battery. The power dispatch controller controls the output of the output terminal of the adaptive power supply according to the sensing result of the sensing circuit. The power dispatch controller determines whether one or both of the adaptive power supply and the battery power the load circuit by adjusting the output of the adaptive power supply.
Abstract:
A non-violate memory device and a control method thereof are provided. The non-violate memory device includes a flip-flop, a retention cell and a memory cell. The flip-flop includes an output inverter. The flip-flop generates a second data according to a first data and a retention signal. The retention cell is coupled to the output inverter of the flip-flop. The retention cell temporarily stores the second data when the retention signal is enabled. During the period that retention signal is enabled, the memory cell stores the second data temporarily stored by the retention cell. Thus, another operation mode of the non-violate memory device is provided to save more power.