Abstract: A motor driving circuit is provided. The motor driving circuit includes an else inverter and a self inverter. The else inverter includes an else-inverter rectifier and an else-inverter driving circuit. The self inverter includes a self-inverter driving circuit and a soft-start protection circuit. The soft-start protection circuit includes a first and a second protection diodes, a self-inverter capacitor and a self-inverter soft-start circuit. The first protection diode is electrically connected to a first else-inverter-rectifier output and a first self-inverter-driving-circuit input. The second protection diode is electrically connected to a second else-inverter-rectifier output and a second self-inverter-driving-circuit output. The self-inverter soft-start circuit and the self-inverter capacitor are connected in series between a first cathode and a second anode of the first and the second protection diodes.

Abstract: A server and a power management method for the server are provided. The server is connected to other servers. The server includes a power source and a battery. The battery and batteries of other servers are in parallel. The server monitors power supplying of the server in real time. When the power source does not provide enough power for the server, the server sends a trigger signal to control the battery and the batteries of other servers to provide power for the server.

Abstract: A control system for a server includes a control chip, a switch module, a hardware power module, a software power module, a power chip, and a basement management controller (BMC) chip. The hardware power module and the software power module output first and second power signals, respectively. The control chip outputs corresponding state signals according to a control signal outputted by the BMC chip. The switch module selectively outputs the first or the second power signals to the power supply chip, to control the power supply chip to perform corresponding power operations.

Abstract: A heat-dissipation system includes a shell, a fan, a latch, and a micro-switch. The fan includes a first connector and a second connector. The first connector includes a number of signal pins, a zero line pin, and a live line pin. The signal pins are used to transmit signals between a motherboard and the fan. The zero line pin and the live line pin are connected to a power supply. The zero line pin of the first connector is connected to a zero line pin of the second connector. When the latch is engaged with the shell, the micro-switch is turned on and the power supply supplies power to the second connector through the micro-switch and the zero and live line pins of the first connector. When the latch is not engaged with the shell, the micro-switch is turned off and the power supply is disconnected from the second connector.

Abstract: A power-off protection system used in a multi-node system includes a detecting module. The detecting module obtains voltage, current and temperature information of all of the nodes and power supplying units in the multi-node system periodically. A determining module determines if any node from the nodes and power supplying units is abnormal. A control module controls a switch connected with the node that is abnormal to turn off, thereby turning off power source connected with the node that is abnormal.

Abstract: A server cabinet includes a rack assembly accommodating a number of servers, a number of fan groups, a first power source, and a second power source. The fan groups are coupled to a rear side of the rack assembly to provide horizontal airflow for dissipating heat generated by the number of servers. Each fan group includes a first fan and a second fan. The first power source is electrically connected to the first fan of each fan group, while the second power source is electrically connected to the second fan of each fan group.

Abstract: A processor used in a multi-node system includes a detecting module, to obtain voltage and current information of all nodes in the multi-node system periodically. A calculating module calculates energy being consumed by each node of all the nodes according to the obtained voltage and current information. A determining module determines a node which needs to be reduced according to the energy calculation. A control module turns on a switch which is connected with the node whose energy needs to be reduced, thereby powering off the node whose energy needs to be reduced.

Abstract: A processor in a multi-node system includes a detecting module which obtains temperatures of all nodes periodically. A comparing module compares all obtained temperatures to obtain a greatest temperature. A determining module determines a fan speed value corresponding to the greatest temperature according to a predetermined table which records relationships of temperatures and fan speed values. A control module controls all fans to work at the fan speed value corresponding to the greatest temperature.

Abstract: An assembly includes a printed circuit board and a solid memory module. The printed circuit board defines a slot in a side surface of the printed circuit board, the slot has a bottom surface, and the printed circuit board defines a groove in the bottom surface and includes a number of contacts attached on an inner surface of the groove. The solid memory module includes a body identical to the slot in shape and size, a connection board corresponding to the groove and extending from a side of the body corresponding to the bottom surface, and a number of terminals of corresponding to the contacts and attached on an outer surface of the connection board. The body is inserted into the slot while the connection board is inserted into the groove and the contacts connect the terminals.

Abstract: A detecting method for detecting fan failure in an electronic device is provided. The electronic device includes at least one fan and an air inlet structure. A first sensor is mounted on a central processing unit (CPU) and senses a first temperature value. A second sensor is mounted on the air inlet structure and senses a second temperature value. The detecting method includes steps of acquiring the first temperature value and the second temperature value; calculating a power value of the CPU; calculating a thermal resistance value based on the acquired first temperature value, the acquired second temperature value and the power value of the CPU; determining whether the calculated thermal resistance value is more than a predetermined thermal resistance value; and generating fan failure information when the calculated thermal resistance value is more than a predetermined thermal resistance value.

Abstract: A power management system includes a main controller, a pair of supporting frames extending from the main controller, and a number of mobile modules removably mounted on the supporting frames. The main controller receives power from an external power source. Each of the mobile modules is connected to a load and electrically connected to the main controller via the supporting frame. The main controller provides power to the load via the corresponding mobile module. Each of the mobile modules presets a power limit according to a rated power of the load connected to the mobile module and cuts off an electrical connection with the load when an operating power of the load is greater than the power limit.

Abstract: A server system includes a server cabinet, several fan control boards, several servers connected to one fan control board, an uninterruptible power supply, a network switch, and several fan groups coupled to the server cabinet. The fan control board includes a determining module to determine whether the fan control board has received a control signal, and a controlling module. The server includes a first detecting module to detect performance characteristics, a first obtaining module to obtain a control signal, and a first transmitting module to transmit the control signal. Each fan group includes several fans to cool the servers, the uninterruptible power supply, or the network switch. When determining that the fan control board received a control signal, the controlling module of the fan control board controls the fan group to rotate at a corresponding speed; otherwise controlling the fan group to rotate at a constant speed.

Abstract: A server system includes a server cabinet, several servers, several fan groups coupled to a rear side of the server cabinet, and several fan control boards each connected to a group of the servers and a corresponding one of the fan groups. Each server includes several electronic components, a detecting module to detect performance characteristics of the electronic components, a comparison module to obtain a rotation speed according to the performance characteristics, and an executing module to convert the rotation speed into a fan speed control signal. Each fan group corresponds to a group of the servers. When the fan control board receives fan speed control signals from the servers, the fan control board converts the fan speed controls into an electrical signal to the fan group, thereby controlling the fan group to rotate at a corresponding speed to satisfy heat dissipation needs of the servers.

Abstract: A cabinet includes a chassis, a server module, a first cooling module, and a number of second cooling modules. The server module includes servers received in the chassis, and each server includes heat generating components. The first cooling module includes first fans. The second cooling modules are mounted in each server. Each second cooling module includes a second fan and a temperature sensor electrically connected to the second fan. When temperatures measured by the sensors are lower than a predetermined temperature, only the first fans are employed to dissipate heat of the servers; when any of the measured temperatures is higher than the predetermined temperature, the temperature sensor that detected the higher temperature transmits a signal to the corresponding second fan for starting the second fan.

Abstract: A server system includes a server cabinet, servers accommodated in the server cabinet capable of modulating a PWM signal, fan groups coupled to a rear side of the server cabinet, and fan control boards. The fan groups each include and to provide a horizontal airflow to cool several servers. The servers are connected to one fan control boards via a first ground cable, a first tachometer cable, and a first PWM cable, and one fan control board is connected to one of the plurality of fan groups via a second ground cable, a second tachometer cable, a second PWM cable, and a supply voltage cable. The servers modulate a PWM signal and send the PWM signals to the corresponding fan group for controlling a rotation speed of the fans, and the first and second tachometer cable transmits in real-time the rotation speed of the fans back to the several servers.

Abstract: A server system includes a server cabinet, several servers accommodated in the server cabinet, several fan groups coupled to a rear side of the server cabinet, and several fan control boards. The servers each include an intelligent platform management interface. Each fan group includes a row of fans to provide a horizontal airflow to cool several of the servers. The fan control boards each include several intelligent platform management interfaces each connected to the intelligent platform management interface via an intelligent platform management bus, thereby allowing the servers sending a message to a corresponding one fan control board. When the fan control board receives one or more messages from the servers, the fan control board is capable of transmitting an electrical signal corresponding to the one or more messages for controlling a rotation speed of a corresponding one fan group.

Abstract: A server system includes a server cabinet, a network switch, a number of servers accommodated in the server cabinet, a number of fan groups, and a number of fan control boards connected to the network switch via Ethernet connections. The servers are connected to the network switch via Ethernet connections for transmitting a data packet to the network switch. The fan groups are coupled to a rear side of the server cabinet and each comprising a number of parallel fans to provide a horizontal airflow to cool several of the servers. Each of the fan control boards is connected to one of the fan groups and configured to convert a data packet to an electrical signal for controlling a rotation speed of the corresponding one of the fan groups.

Abstract: A decompression system for DCT-base compressed graphic data with transparent attribute includes a memory to store a compressed graphic data and a compressed mask data; a controller to read the compressed graphic data and the compressed mask data out of the memory; a first decompressor to decompress the compressed graphic data and generate a first color space image signal; a color space transformation device to transform the first color space image signal into a second color space image signal; a special color signal storage to store a plurality of special color signals; a second decompressor to decompress the compressed mask data and generate a select signal; and a first multiplexer to select the second color space image signal or a special color signal to output based on the select signal, wherein each special color signal indicates a different level of transparent attribute.

Abstract: A computer system includes a motherboard with first and second storage device interfaces and first to third memory slots, and first to third serial advanced technology attachment dual-in-line memory modules (SATA DIMMs). First and second extending boards are extended from two opposite ends of each SATA DIMM, arranged with first and second edge connectors, respectively. The first edge connector of the first SATA DIMM is connected to the first storage device interface. The second edge connector of the first SATA DIMM is connected to the first edge connector of the second SATA DIMM. The second edge connector of the second SATA DIMM is connected to the first edge connector of the third SATA DIMM. The second edge connector of the third SATA DIMM is connected to the second storage device interface.

Abstract: In a method for transmitting data between a host computer and a slave device, the host computer connects to a slave device through a data communication port. The slave device is equipped with a power supply that includes at least one capacitor. The power supply is charged through the host computer using the capacitor when the host computer is powered on. The method controls the host computer sends data to the slave device, and controls the capacitor to discharge to provide power to the slave device for a period of time when the host computer is powered off, and stores the data packet into the slave device during the period of time. The method further retrieves the data from the storage device when the host computer is powered on, and resends the data to the slave device through the data communication port.