| 摘要 |
PURPOSE:To constitute a small, light load sequential switching device inexpensively by combining heaters of all load circuits and a bimetal switch thermally and connecting to a power source in parallel. CONSTITUTION:When a power source switch 2 is turned on, and current flows in a load 31, current flows in a heater 51 and heated. Thereby, the contact of a bimetal switch 62 comes into contact and a heater 52 is heated. At the same time, current flows in a load 32, and a switch 61 is opened. Then, the heat of the heater 51 is radiated naturally, and the switch 62 is opened, and accordingly, loads 31, 32 are not driven. As the heater 52 also radiates heat naturally under this condition, the switch 61 is closed again and returned to initial state, and the above-mentioned operation is repeated. |
