公开(公告)号：US20090116823A1

公开(公告)日：2009-05-07

申请号：US12015928

申请日：2008-01-17

申请人： Jie-guang Zhang ,  Shih-Hao Liu

发明人： Jie-guang Zhang ,  Shih-Hao Liu

IPC分类号： H02P7/29

CPC分类号： H02P7/29

摘要： A fan speed control device includes a management selection module, a first and a second buffers, a resistor, a transistor, and a switch. Depending upon whether a motherboard supports a system of a baseboard management control or not, the fan speed control device selectively uses an indicative signal of a serial input and output interface or an indicative signal of the baseboard management control to indicate a power-on status. At the power-on moment, the fan speed control device controls the fan to operate at its minimum speed, so that a system crash due to a power output shortage of a power supply can be avoided. As the system enters stable operation, the fan speed is controlled by a pulse width modulation signal.

摘要翻译： 风扇速度控制装置包括管理选择模块，第一和第二缓冲器，电阻器，晶体管和开关。 根据主板是否支持基板管理控制的系统，风扇速度控制装置选择性地使用串行输入和输出接口的指示信号或者基板管理控制的指示信号来指示开机状态。 在通电时，风扇速度控制装置控制风扇以其最小速度运行，从而可以避免由于电源输出不足导致的系统崩溃。 随着系统进入稳定运行，风扇转速由脉宽调制信号控制。

公开(公告)号：US07615946B2

公开(公告)日：2009-11-10

申请号：US12015928

申请日：2008-01-17

申请人： Jie-guang Zhang ,  Shih-Hao Liu

发明人： Jie-guang Zhang ,  Shih-Hao Liu

IPC分类号： H02P7/00

CPC分类号： H02P7/29

摘要： A fan speed control device includes a management selection module, a first and a second buffers, a resistor, a transistor, and a switch. Depending upon whether a motherboard supports a system of a baseboard management control or not, the fan speed control device selectively uses an indicative signal of a serial input and output interface or an indicative signal of the baseboard management control to indicate a power-on status. At the power-on moment, the fan speed control device controls the fan to operate at its minimum speed, so that a system crash due to a power output shortage of a power supply can be avoided. As the system enters stable operation, the fan speed is controlled by a pulse width modulation signal.

摘要翻译： 风扇速度控制装置包括管理选择模块，第一和第二缓冲器，电阻器，晶体管和开关。 根据主板是否支持基板管理控制的系统，风扇速度控制装置选择性地使用串行输入和输出接口的指示信号或者基板管理控制的指示信号来指示开机状态。 在通电时，风扇速度控制装置控制风扇以其最小速度运行，从而可以避免由于电源输出不足导致的系统崩溃。 随着系统进入稳定运行，风扇转速由脉宽调制信号控制。