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Wind Sensor turn on and off NTC heating

Posted: Thu Aug 22, 2013 1:15 am
by quax
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

Re: Wind Sensor turn on and off NTC heating

Posted: Wed Aug 13, 2014 2:08 pm
by paul
A MOSFET switching ground of the whole sensor would work.
Just don't read your output while the sensor is off.

Paul