| 摘要 |
PURPOSE:To delete the number of signal lines by transmitting a composite signal formed by adding the speed detection signal and the rotary phase detection signal of a motor through a signal line. CONSTITUTION:The outputs of a Hall element 6 and a speed detecting magnet 2 are added by the first adder 18, and input through a signal line 20 to a separator 19. A signal separated by the separator 19 is processed by a phase comparator 13 and a f/v converter 11, the outputs of the comparator 13 and the converter 11 are added by the second adder 14, and input to a motor drive circuit 15. Thus, the operation signal detector A and the control signal generator B of the motor can be connected via a signal line. |
