Gas Flow Meter
Published in issue 379, July/August 2008
The most surprising thing about this circuit is the sensor that it uses: a 4.5 V miniature torch bulb. The glass envelope is (carefully!) broken and then the pieces of glass removed, leaving just the filament intact. The filament forms the actual sensor element.
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Click below to download a PDF copy of this article from Elektor magazine. Please note. In view of the complexity of international markets, Elektor cannot guarantee the availability of components for this project.
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