Abstract: A voltage-stacked system includes a first voltage source, at least one second voltage source, a master monitoring circuit and at least one slave monitoring circuit. The first voltage source and the at least one second voltage source are coupled in series. The master monitoring circuit is coupled to the first voltage source, and arranged for monitoring and controlling the first voltage source and transmitting a monitoring signal. The at least one slave monitoring circuit is respectively coupled to the at least one second voltage source and the master monitoring circuit for monitoring and controlling the at least one second voltage source, and accordingly sending a response signal to the master monitoring circuit.

Abstract: A voltage-stacked system includes a first voltage source, at least one second voltage source, a master monitoring circuit and at least one slave monitoring circuit. The first voltage source and the at least one second voltage source are coupled in series. The master monitoring circuit is coupled to the first voltage source, and arranged for monitoring and controlling the first voltage source and transmitting a monitoring signal. The at least one slave monitoring circuit is respectively coupled to the at least one second voltage source and the master monitoring circuit for monitoring and controlling the at least one second voltage source, and accordingly sending a response signal to the master monitoring circuit.

Abstract: A flash memory apparatus including a command analysis unit, a first flash memory and a second flash memory is provided. The command analysis unit with a plurality of command buffers receives a plurality of command elements and queues the command elements in the command buffers in sequence. The command analysis unit transmits the command elements simultaneously to the first flash memory and the second flash memory through a command bus, and the flash memory device writes/reads the first flash memory and the second flash memory simultaneously through a first data bus and a second data bus different from the first data bus respectively to execute an operation. The flash memory device queues the command elements so as to enhance the command throughput, and the flash memories share the same command bus for dual channel operation.

Abstract: A heat-dissipating fan has a housing and an impeller. The housing has a receiving space and one or more guide rings. The receiving space forms an airflow inlet and an airflow outlet. The guide ring is mounted near the airflow outlet and has one or two guide surfaces formed thereon and facing the airflow inlet. The impeller is mounted rotatably in the receiving space and has a hub and multiple blades. Airflow channels formed between adjacent blades each have a cross-section narrowed from a top end of the guide ring to the airflow outlet. Each blade has a receiving notch formed in a bottom edge thereof, corresponding to a cross-section of the guide ring and defines a gap between the blade and the guide ring. Airflow is speeded up in the airflow channels based on Venturi effect, such that a heat-dissipating efficiency of the fan is improved.

Abstract: An impeller assembly is revealed. The impeller assembly includes a base arranged with at least one impeller. The base has a flow guide surface disposed with at least one mount location set thereof. The mount location set is composed of a plurality of locking slots and a mounting region while each locking slot connects the mounting region with the flow guide surface. The impeller includes a mounting part mounted into the mounting region of the base and a plurality of blades is arranged around the mounting part. A reinforcing piece is disposed between the inner edge of the blade and the mounting part for connection, and is mounted into the locking slot correspondingly. By such design, the structural strength of the weak region between the mounting part and the blade is increased and this favors precise location and assembly of the impeller with the base.

Abstract: This invention relates to an impeller assembly comprising at least one ring member and an impeller, in which the ring member has an inner peripheral edge and an outer peripheral edge oppositely facing to each other; the impeller includes a body and multiple blades, wherein each blade has a front edge and a rear edge, which respectively define an inlet side and an outlet side; the multiple blades are mounted around the outer peripheral edge of the body and multiple flow channels are formed between the blades, and the ring member is provided at the outlet side of the flow channels. According to this configuration, the impeller is made by assembly type method so that the difficulty in mold releasing and machining resulted from interference between components can be overcome; furthermore the manufacturing is further facilitated.

Abstract: A heat-dissipating fan has a housing and an impeller. The housing has a receiving space and one or more guide rings. The receiving space forms an airflow inlet and an airflow outlet. The guide ring is mounted near the airflow outlet and has one or two guide surfaces formed thereon and facing the airflow inlet. The impeller is mounted rotatably in the receiving space and has a hub and multiple blades. Airflow channels formed between adjacent blades each have a cross-section narrowed from a top end of the guide ring to the airflow outlet. Each blade has a receiving notch formed in a bottom edge thereof, corresponding to a cross-section of the guide ring and defines a gap between the blade and the guide ring. Airflow is speeded up in the airflow channels based on Venturi effect, such that a heat-dissipating efficiency of the fan is improved.

Abstract: An impeller assembly has a hollow body, multiple main blades and multiple booster blades. The main blades are mounted around the body to define multiple flow channels between the main blades. The boosting blades are mounted around the body at the bottom edge and each is located at one of the flow channels. Each booster blade has a segment aligning with and overlapping a corresponding one of the main blades. In such an arrangement, the speed of airflow is increased and the heat-dissipating efficiency provided by the impeller assembly is enhanced.

Abstract: An impeller assembly has a hollow body, multiple main blades and multiple booster blades. The main blades are mounted around the body to define multiple flow channels between the main blades. The boosting blades are mounted around the body at the bottom edge and each is located at one of the flow channels. Each booster blade has a segment aligning with and overlapping a corresponding one of the main blades. In such an arrangement, the speed of airflow is increased and the heat-dissipating efficiency provided by the impeller assembly is enhanced.

Abstract: A cooling fan includes a rotatable hub and a plurality of generally V-shaped impellers that are angularly displaced from each other and that extend outwardly from the hub. Each of the impellers has first and second impeller halves that extend outwardly from the hub and that are connected to each other so as to form cooperatively an angle therebetween.

Abstract: An assembled type impeller includes a main impeller, and a secondary impeller; the main impeller has a hub, main blades on the hub, an extension portion next to one end of the hub, and a top portion over an upper end of the extension portion; the secondary impeller has a hub, secondary blades on the hub thereof, and a top portion over an upper end of the hub thereof; the secondary impeller is joined to the main impeller with the hub thereof being tightly fitted onto the extension portion, and with the secondary blades being connected to respective ones of the main blades to form larger blades; in manufacturing the main impeller, first a motor housing is positioned in a mold for the main impeller, and then the main impeller is made by means of injection molding; thus, the main impeller and the motor housing can be naturally connected together.

Abstract: A cooling fan includes a rotatable hub and a plurality of generally V-shaped impellers that are angularly displaced from each other and that extend outwardly from the hub. Each of the impellers has first and second impeller halves that extend outwardly from the hub and that are connected to each other so as to form cooperatively an angle therebetween.