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Which are the advantages of using four strain gages in a Wheatstone bridge?

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claudiocamera

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Derive the sensibility of a Wheatstone bridge( ΔVo/(ΔI/I)) with four active strain gages . Assume that the absolute value of ΔI/I is the same for all of them.

Which are the advantages of using four strain gages over using only one strain gages and trhee resistors of fixed value in a Wheatstone bridge. Show expressions to support the answer.
 

Re: Strain Gage question

**broken link removed**

Regards,
IanP
 
Re: Strain Gage question

hi,

check the following the circuit

13_1166798768.JPG
 

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