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Gas Sensor Circuit

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Thread Starter

vjkolaventy

Joined Mar 3, 2022
1
Hi

I am trying to understand how to calculate the values of passive components used in the following circuit. I am trying to design a gas sensor circuit that can be used with sensors from manufacturers like City Tech, Alphasense and Semeatech. Can anyone please explain me how the values of the resistors and capacitors in the circuit have been calculated? Circuits from different websites like TI, Analog, Alphasense, Semeatech, Membrapor etc. have different values of these components. R Load is given by the sensor manufacturer and the basics for calculating the R Gain was given in TI document. I am just a hobbyist and not an engineer. So please explain in detail if possible. Thanks.

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Regards
Vijay
 
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