Negative Voltage Generator

[thirumurugaad]

Hi I m using a Flexiforce FSR in my project. The circuit I use (link below) needs a -1V input to the sensor. I have power sources that can supply 5V and 12V. how can I generate a negative voltage for the sensor?

https://www.tekscan.com/sites/default/files/flexiforce-circuit.jpg

 

[thirumurugaad]

Re: Pressure Sensor to measure

Referencing previous thread:

https://www.edaboard.com/threads/290796/

Hi I am using the circuit posted by tpetar, how do I generate the -1V for the sensor input?

 

[dick_freebird]

There are charge pump negative voltage converter
ICs if your sensor current is reasonably low. Follow
that with a little negative LDO if you want to clean
it up some more.