Combustible gas alarm circuit (2)
Source: InternetPublisher:红水杯 Keywords: Combustible gas alarm circuit BSP Updated: 2020/11/24
Working principle of the circuit: D in the circuit is the detection component and C is the compensation component. The D and C
components are installed in the explosion-proof air chamber and are in contact with the atmosphere through the explosion-proof cover. In the figure, R4,
C, D, R3, R4, etc. form the Wheatstone bridge. Operational amplifier IC1, R5, R6. , C2
, etc. form a voltage comparison circuit.
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