| 摘要 |
PURPOSE:To improve handling convenience, by a method wherein a second timer, started by the operation of the switching unit of a first timer during operation and stopped after a predetermined time, changes the indicating state of lamps in accordance with the judgement whether it is during the operation or during the stoppage. CONSTITUTION:When an operating switch 1 is put ON, a first timer 3 starts the counting operation of 3hr, for example, simultaneously and opens a switch 9 to stop combustion upon the time-up thereof. A lamp 4, put out during the counting operation of the first timer 3 and lighted upon the time-up of the first timer 3, is driven by an indicating circuit 5. A lamp 8 is lighted during the counting operation of a second timer 7, starting the counting operation thereof upon the input of a signal into a reset terminal RST 2 and stopped after 2sec, for example, and is put out upon the time-up of the second timer 7. The first timer 3 is initiated by the operation of another switch 11a and the counting operation of 3hr is restarted, then, the second timer 7 is operated for 2sec at the same time and the lamp 8 is lighted during this period of time. |
