Help in choosing the right instrumentation amplifier for strain gauge circuit

Discussion in 'The Projects Forum' started by Exp[e]rt, May 29, 2015.

  1. Exp[e]rt

    Thread Starter New Member

    May 29, 2015
    I am designing a circuit that will measure strain on 6 different parts on a car. On each part 2 strain gauges will be used in different sides as can be seen in the following picture (half bridge)


    The voltages that I will get from the bridges can be both positive and negative.
    Since the circuit will be installed in a car, I will be using +5 volts regulated voltage supply.

    My questions are as following:

    1. Will I be able to amplify negative voltages with single supply instrumentation amplifier?
    2. Is it a must to have a low pass filter after the instrumentation amplifier? I am aiming to reach a high precision circuit.

    Thank you.
  2. joeyd999

    AAC Fanatic!

    Jun 6, 2011
    Edit your post to remove all references to the word "car". It'll keep your thread from getting locked.