A new document from Britain's OSHA agency says setting alarm points "should not be 'fit and forget'" because initial alarm set-points may be adjusted up or down due to process-related events and ...
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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