原则上，这种电路像其他逻辑电路一样工作：对多个输入进行分析并做出判断。
In principle, the circuit works like any other logic circuit: it analyzes multiple inputs and makes a decision.
电路的电源电压为3 ~ 18 V，适用于各种类型的数字逻辑电路的逻辑电平判断。
The circuit supply voltage is 3 ~ 18 v, suitable in logic level of kinds of digital logical circuits.
前两个电路代表不同版本的“传感器的分歧”只是逻辑电路，而不是“好火焰”检测电路。
The previous two circuits represent different versions of the "sensor disagreement" logic circuit only, not the "good flame" detection circuit(s).
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