| 摘要 |
PURPOSE:To give the delay time between the stop of one load and driving of another load, by opening one contact with time-up, charging a capacitor, and closing another contact when the charging voltage reaches a given value. CONSTITUTION:The counter circuit 31 starts count with the application of the power supply. Further, when the counter circuit 31 counts up, the level at the output terminal o1 inverts from high to low level and the level at the output terminal O2 inverts from low to high level. The transistor 18 turns off with these inversions to start the charging of the capacitor 15 and also to turn on the transistor 19, activating the relay 20 to open the normally closed contacts 20b1 and 20b2. Further, when the charging voltage of the capacitor 15 reaches a given value, the transistor 21 turns on, the relay 22 is activated to close the normally opened contacts 22a1, 22a2. |
