| 摘要 |
PURPOSE:To improve serviceability, by reliably and steadily establishing a combustion detecting level by means of resistors and also by compensating a lag in a rising- up time of a combustion detecting element. CONSTITUTION:A combustion detecting circuit is composed of resistors 17, 18 and 20, a combustion detecting element (thermocouple) 19 and a compensator 23. The combustion detecting circuit is connected to an oscillating circuit through a diode 15. Alternating current signals transmitted after confirmation perform a switching of a transistor 26 via resistors 24 and 25. Switching signals are transmitted to an electromagnetic type safety valve 30 through a transformer 32. |
