| 摘要 |
<p>PURPOSE:To attach and detach a tape cassette which is beforehand held in a tape cassette holder provided to a tape recorder body to and from a tape cassette mounting position by utilizing the driving force of a motor. CONSTITUTION:When an attaching start switch S is turned on, the input signal of the input terminal SET of an FF circuit 1 goes to the high level and therefore the output terminal Q of the circuit 1 goes to the high level, the output terminal Q' the low level, and the input signal of the input terminal i1 of a motor forward-backward run selective driving circuit 2 the high level. Hence, the output terminal Q1 of the circuit 2 goes positive and the output terminal Q2 negative; therefore electric current flows in thedirection of Q2 from the output terminal Q1 in a motor 3 connected to the output terminals Q1, Q2, and the motor runs forward, whereby the attaching operation is started in such a way that the tape cassette held beforehand in a tape cassette holder is drawn into the tape cassette mounting position of the tape recorder body. On the otherhand, if a take-out switches S3 is turned on while the tape cassette is held attached, the take-out operation is started in such a way that the tape cassette is removed from the tape cassette mounting position.</p> |
