| 摘要 |
PURPOSE:To decrease a number of connecting lines by connecting a transistor with a portion of a resistance for dividing a terminal voltage of a motor body and by turning ON and OFF said transistor so as to change a speed of the motor body. CONSTITUTION:A collector and an emitter of transistor Q are connected with both ends of a resistance R1 of a voltage divider circuit for dividing a terminal voltage of a motor body 1 and a base of the transistor Q is connected with a control connection terminal P5 via a current-limiting resistance R4. Then, the connection of the terminal P5 is changed to a supply voltage Vc or 0V by a switch SW to perform ON-OFF control of the transistor Q and to make two stages of speed change. In this way, three terminals are sufficient as connection terminals, the connector can be miniaturized and the man-hour of operation can be reduced.
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