| 摘要 |
<p>PURPOSE:To expand the range of unit utilization by placing only a desired unit in the operation state and the others in the stop state through switch operation and by operating every unit in recording mode. CONSTITUTION:When all units are in stop mode, operating tape recorder 12 with switch S1 depressed supplies reset signals to radio set 13 and TV14 via diodes D3 and D5, but unless the both are in operation, transistors Q4 and Q7 are not connected to the electric power source at their collectors, exerting no influence of reset signals. Next, while recorder 12 is in recording mode, switches S4-S6 coupling with the recording button are switched to contact R. As a result, the reset signals from recorder 12 to radio 13 and TV14 and those from radio 13 and TV14 to recorder 12 are all cut off, so that the radio set and TV set will operate independently at the same time. Thus, the simple constitution expands the range of the utilization of units such as a radio set and TV set.</p> |
