mass air flow maf sensor circuit

Posted on Feb 6, 2014

This is a design circuit for mass air flow sensor circuit. The mass air flow sensors converts the amount of air drawn into the engine into a voltage signal. The primary components of the MAF sensor are thermistor, a platinum hot wire, and an electronic control circuit. The thermistor measures the temperature of the incoming air. This is the figure

mass air flow maf sensor circuit
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of the circuit; The hot wire is maintained at a constant temperature in relation to the thermistor by the electronic control circuit. An increase in air flow will cause the hot wire to lose heat faster and the electronic control circuitry will compensate by sending more current through the wire.

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