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Excite a circuit

  1. Nov 1, 2007 #1
    What is meant by excite a circuit?

    My question is what is the excitatoin voltage of a wheatstone bridge? Is this the minimum voltage that needs to be applied across the wheatstone bridge.

    I'm looking at a strain gage application for a wheatstone bridge.

    Thanks for the super help. This is my first posting!:rolleyes:
  2. jcsd
  3. Nov 2, 2007 #2


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    Science Advisor
    Gold Member

    "Exciting" just means applying a voltage or current.
    There is no minimum voltage (or current) as such for abridge, you can make it as small as you want. However, the signal-to-noise ratio will of course be smaller if you you a low voltage.
    I.e. the only "limit" is your ability to read out the result.
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