公开(公告)号：US4418342A

公开(公告)日：1983-11-29

申请号：US306701

申请日：1981-09-29

申请人： Hans-Joachim Aschoff ,  Lothar Cholewa

发明人： Hans-Joachim Aschoff ,  Lothar Cholewa

IPC分类号： A47L9/28 ,  A47L11/18 ,  G08B21/00

CPC分类号： A47L9/2889 ,  A47L11/18 ,  A47L11/4002 ,  A47L11/4008 ,  A47L11/4011 ,  A47L11/4041 ,  A47L9/2831 ,  A47L9/2857

摘要： The method of and the device for indicating the optimum adjustment of the effective length of bristles of a bristle roller in a floor cleaning appliance driven by an electric motor is based on the measurement of a voltage drop across a resistor connected in series with the electromotor; the voltage drop is applied to a switching circuit including two parallel branches of series connected switching diodes with light-emitting diodes so as to activate the light-emitting diodes when the voltage drop exceeds the bias determined by the threshold voltages of the switching diodes.

摘要翻译： 用于指示由电动机驱动的地板清洁装置中的刷毛的刷毛的有效长度的最佳调节的方法和装置是基于与电动机串联的电阻器的电压降的测量; 电压降被施加到包括具有发光二极管的串联连接的开关二极管的两个并联分支的开关电路，以便当电压降超过由开关二极管的阈值电压确定的偏置时激活发光二极管。

公开(公告)号：US4517502A

公开(公告)日：1985-05-14

申请号：US594773

申请日：1984-03-26

申请人： Hans-Joachim Aschoff ,  Lothar Cholewa

发明人： Hans-Joachim Aschoff ,  Lothar Cholewa

IPC分类号： H02P25/10 ,  A47L9/28 ,  H02H7/085 ,  H02P3/08 ,  H02P7/06 ,  H02P1/18

CPC分类号： A47L9/2889 ,  A47L9/2831 ,  A47L9/2842 ,  H02H7/0855

摘要： Disclosed is a monitoring circuit responding to different operational conditions of an electric motor. The circuit includes a measuring resistor connected in series with the stator winding of the motor to produce an actual load value signal. The actual value signal is applied to one input of a comparison circuit whose other input is consecutively supplied with three different nominal reference voltages corresponding to principle operational conditions of the motor, namely to the starting phase, to the normal operational phase, and to an overload. The source of the variable reference voltage includes switching transistor cooperating with a timing member and with voltage dividers adjustable from zero to a maximum nominal voltage value corresponding to the power supply voltage.

摘要翻译： 公开了响应于电动机的不同操作条件的监视电路。 电路包括与电动机的定子绕组串联的测量电阻器，以产生实际的负载值信号。 实际值信号被施加到比较电路的一个输入，其另一个输入连续地被提供有三个不同的标称参考电压，这三个不同的标称参考电压对应于电动机的主要工作条件，即起动阶段，到正常运行阶段， 。 可变参考电压的源包括与定时构件协作的开关晶体管，以及可以从零调节到对应于电源电压的最大额定电压值的分压器。