发明授权
US4355750A Double-capstan tape driving device 失效
双主动磁带驱动装置

Double-capstan tape driving device
摘要:
First and second capstans are rotated at respective speeds by first and second motors. The speeds of revolution of the first and second motors are detected as detection signals, and the revolution speed of at least one of the first and second motors is controlled in accordance with a difference between the detection signals. An offset voltage is added to one of the detection signals corresponding to the revolution speeds of the first and second motors for the control of tape tension.
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