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先锋E4500型组合音响属高档机型,它具有自动返转放音功能。机心中有主导轴、压带轮、收带轮各两个。其中,两个压带轮和收带轮均可作为主动轮驱动磁带放音。自动返转功能是利用磁带走带结束后,磁带终端检测系统将检测到的磁带终端信号提供给有关逻辑电路,经逻辑运算以后输出控制信号,使磁头自动后退、旋转180°后上升使磁头工作缝隙与另一面磁迹相接触,磁带反向运行,进行另一面放音。此类机
Pioneer E4500-type combination of audio is a high-end models, it has automatic playback function. There are the main axis of the heart, pressure pulley, take the pulley of the two. Among them, the two pressure pulley and take-up wheel can be used as the driving wheel drive tape playback. Auto-rewind function is to use the tape after the tape is terminated, the tape terminal detection system will detect the tape terminal signal provided to the logic circuit, the logic control output after the control signal so that the head automatically backwards, rotated 180 ° after the rise of the head work Slot and the other side of the track in contact with the tape running in reverse, the other side to play. Such machines