| 摘要 |
<p>PURPOSE:To prevent a malfunction in an automatic recording time by securing the automatic resetting for the self-holding device of a switching means when the power supply of an acoustic device is cut off in order to supply the output signal of the acoustic device itself to an output terminal. CONSTITUTION:The output of a control oscillator 2 incorporated in a tuner is supplied to an output terminal 7 with operation of a switch 11. The output of the oscillator 2 is supplied to a tape recorder, and the recording level of the tape recorder is controlled with the output of the oscillator 2. Then the switching is usually carried out so that the output of a tuner part 1 is supplied to the terminal 7. However if no switching is carried out by mistake, the power supply is cut off by setting the timer as a desired time point. Thus the power supply is cut off to a relay coil 10. Then an automatic setting is carried out so that a switch 8 is reset and that the output of a tuner part 1 is supplied to the terminal 7. As a result, the time is actuated at a desired time point and the output of the part 1 is recorded assuredly in a record mode.</p> |
