| 摘要 |
PURPOSE:To secure the operation for the corresponding device as well as to reset other devices to the stop state through just one action to turn on the switch of the desired device. CONSTITUTION:When using device 1 (tape recorder), switch S1 is pressed to turn on latching relay 18. And power source 11 is connected to device 15. In case the switching is desired to device 16 (radio set) under these conditions, switch S2 is pressed to turn on latching relay 19 with source 11 connected to device 16. At the same time, the voltage at the input terminal of device 16 is supplied to transistor Q1 in the form of the reset signal via diode D1 and capacitor C1, and capacitor C2 is charged suddenly with transistor Q2 turned on temporarily. As a result, the current flows to relay 18 to invert the contact to the OFF state. In other words, device 15 is cut off from power source 11. |
