Wind Sensor turn on and off NTC heating

Questions about Modern Device and JeeLabs Sensors
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quax
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Joined: Thu Aug 22, 2013 1:10 am

Wind Sensor turn on and off NTC heating

Post by quax » Thu Aug 22, 2013 1:15 am

Hi,

Is there a way to swtich on and off heating by a microcontroller? In idle state there is no need to actively heat the NTC always.
Maybe with a MOSFET in front of the OPAMP?

Regards,
Quax

paul
Site Admin
Posts: 734
Joined: Mon May 12, 2008 4:19 pm

Re: Wind Sensor turn on and off NTC heating

Post by paul » Wed Aug 13, 2014 2:08 pm

A MOSFET switching ground of the whole sensor would work.
Just don't read your output while the sensor is off.

Paul

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