| 摘要 |
PURPOSE:TO increase the remote operation mode and to make unnecessary BPF of high precision, by providing a plurality of operaton components with the mon- frequency oscillator transmitted from the visited place and conrolling the output time. CONSTITUTION:When the output of the oscillator 11 is inputted to the telephone set at the visited place with the operation of the switch 10, the transistor T1 and the monostable multivibrator 4 are turned on, turning on T2 and activating the plunger 5. Rewinding operation is made and the reel stand 8 is stopped, then FF consisting of the NAND gates N6 and N7 is inverted with the output of the end detecton circuit 9, activating the plunger 6 which causes the condition of reproduction. Next, the monostable multivibrator 14 is operated by turning on the switch 13 of the oscillator and output is delivered, then the oscillatin tone is stopped during the operation of the monostable multi-vibrator 4. FF is reset and the operation of reproduction can be stopped. |
