| 摘要 |
<p>PURPOSE:To reduce the fluctuation of winding speed and to achieve stabilization against external disturbance, by providing a reel driving circuit which decreases the ratio of fluctuation of number of revolutions of a winding motor to the fluctuation of number of revolutions of a motor to be wound at a high speed. CONSTITUTION:A base emitter voltage of a transistor 12 (TR) and a forward voltage of a diode are denoted as 0.6 volt in this case. If the collector and the emitter of the TR12 are shortened and a counter electromotive force of a motor 2 is increased, the collector voltage of the TR12 is lowered and a voltage between the collector and the emitter is saturated. The ratio of the fluctuation of revolutions of a winding motor to the fluctuation of revolutions of a motor 2 to be driven is (580-500)/(500-380)=0.67. Thus, the ratio of fluctuations can be reduced to about 1/10, allowing to achieve stabilization against external disturbance.</p> |
