公开(公告)号：US20050258789A1

公开(公告)日：2005-11-24

申请号：US11189149

申请日：2005-07-25

申请人： Robin Getz ,  David Hanrahan

发明人： Robin Getz ,  David Hanrahan

IPC分类号： H02P6/06 ,  H02P6/08 ,  H02P7/06

CPC分类号： H02P6/08

摘要： A drive circuit for a brushless DC motor includes a switch constructed and arranged to drive the motor with a pulse signal responsive to a control signal, and control circuitry coupled to the switch and constructed and arranged to generate the control signal responsive to rotor position information from the motor so as to synchronize the pulse signal to the rotor position. A current sensing device can be used to provide the rotor position information to the control circuitry by sensing current flowing through the motor.

公开(公告)号：US20060181231A1

公开(公告)日：2006-08-17

申请号：US11353387

申请日：2006-02-14

申请人： Enrique Romero Pintado ,  Robin Getz

发明人： Enrique Romero Pintado ,  Robin Getz

IPC分类号： H02P7/06

CPC分类号： G06F1/20 ,  Y10S388/909

摘要： Detecting the presence of an electric fan is described. A current sink circuit is coupled to a pulse width drive output of a fan control circuit. A logic state in a logic input buffer is defined based on current flow through the current sink. The logic state indicates if a fan is coupled to the pulse width drive output.

摘要翻译： 描述检测电风扇的存在。 电流吸收电路耦合到风扇控制电路的脉冲宽度驱动输出端。 逻辑输入缓冲器中的逻辑状态是基于通过电流接收器的电流来定义的。 逻辑状态指示风扇是否连接到脉宽驱动输出。