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Gas and coal gas detection alarm circuit composed of CH217
Source: InternetPublisher:念念Brown Keywords: Alarm circuit Updated: 2024/10/09
In the gas and coal gas detection alarm circuit diagram composed of CH217 single-chip gas and coal gas detection alarm integrated circuit, R1 is the gas sensor probe, and its resistance decreases linearly with the increase of gas concentration. RP3 is used to adjust the output voltage of the amplifier, and R6 and R7 extract the two reference signal voltages of warning and danger.
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