Linear Potentiometer

[sa428]

Hello,

Can i use Analog input channel to measure the variable resistance . if not what is the other way ?

please explain ,

Thank-you

Sweety Agarwal

[Henrik_Volkers · Accepted solution]

The analog input of a regular DAQ Card measure voltages!

However, grace to the nature there is something called Ohms law. (U=RxI)

So  by applying a voltage to your linear potentiometer ends , a curent will flow  and 'distribute' the voltage (hopefully) equal over the lengh of the resistive path. With the help of the tap you now can measure a voltage (here we are) at a specific point.

[sa428]

Thanks !!!

gosh !!! it should have striked me earlier.