| 摘要 |
<p>PURPOSE:To stably control a capstan with a stable winding tension by giving a load to a capstan motor by an electromagnetic force to control the capstan at the time of the recording and reproducing mode. CONSTITUTION:When signals Hu, Hv, and Hw of position detecting elements 1 to 3 of the driving magnet of a motor are inputted to a controller 4, transistors 5 to 10 and 14 to 19 are controlled by the controller 4 so that a control voltage and a load voltage are applied to motor driving coils 11 to 13 in accordance with the pattern of these signals. In the section where the load voltage is supplied, the motor does not generate the rotating force, and an external load is applied to the motor. Thus, the load due to the load voltage is given to the capstan motor at the time of recording and reproducing to stably control the capstan.</p> |
