CHICAGO (WLS) -- People in Illinois could be more at risk than many other states because more residents there, about 80%, rely on natural gas for heat, hot water and cooking. Now, state legislators ...
Here is a gas leak detector circuit that detects the leakage of LPG gas and alerts the user through audio-visual indications. The circuit operates off a 9V PP3 battery. Zener diode ZD1 is used to ...
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