I read somewhere that the air flow sensors in an ecig is simply a small microphone? does anyone know if this is the case and if all e-cigs work this way (except for the ones that have an activation button)?
Airflow sensor, microphone?
- Thread starter esqonline
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It's a diaphragm that changes capacitance when air is sucked over it and it's deformed. It is part of an oscillator circuit that produces a frequency output that a microcontroller reads. It can tell which way air is moving from the output so that it doesn't turn on when you blow into it. A microphone needs to move back and forth rather quickly to produce a voltage in it's coil so it wouldn't work in this case.
Yo dog, you esplain them transducers now ya hear?
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