| 摘要 |
TITLE OF THE INVENTION: Speed Regulator An AC feedback circuit is interconnected through a choke coil between the input and output lines of a motor drive circuit so that the negative feedback may be effected at a low frequency close to the cutoff frequency of a control system but the positive feedback may be effected at a high frequency. The carrier signal or the high frequency signal for controlling the switching may be generated within the drive circuit. Thus a switching type speed regulator which is simple in construction yet has high efficiency may be provided. |
