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
    1
    0
    Hello,
    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)

    [​IMG]

    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
    2,672
    2,704
    Edit your post to remove all references to the word "car". It'll keep your thread from getting locked.
     
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