| 摘要 |
PURPOSE:To prevent mechanical noise from being generated and a tape from being damaged by the operation of a pinch roller or the like in the case of switching the tape and radio. CONSTITUTION:In the case of reproducing the tape, transistors 28 and 13 are turned on since an interruption signal 33 from a microcomputer 34 is turned to an 'L' level. Thus, the driving motor 14 of a tape deck 11 receives power supply from a (+B terminal) 45. On the other hand, power is directly supplied from a (tape +B terminal) 12 to a plunger 15, and the pinch roller of a head driving mechanism 16 is turned to a state being in contact with the tape. The microcomputer 34 detecting the interruption signal such as traffic information or emergency signals, multiplexed to FM broadcasting turns the interruption signal 33 to an 'H' level and the transistors 28 and 13 are turned off. Therefore, although the power supply to the driving motor 14 is turned off, the power supply to the plunger 15 is held as it is. Accordingly, contact relation between the pinch roller and the tape is not turned on/off by switching the tape and the radio. |
