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Q&A What benefit has a differential amplifier when measuring a sensor signal?

What benefit has a differential amplifier when measuring the signal from a sensor that is remotely located such as in this example: - Why can't I use an arrangement like this: -

1 answer · posted 4y ago by Andy aka‭ · last activity 4y ago by Andy aka‭

Question differential-amplifier sensor

#4: Post edited by

Andy aka‭ · 2020-06-29T13:26:03Z (almost 4 years ago)

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#3: Post edited by

Andy aka‭ · 2020-06-28T14:44:56Z (almost 4 years ago)

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~~What is the benefit of a differential amplifier when measuring the signal from a sensor that is remotely located such as in this example: -~~
![Image alt text](https://electrical.codidact.com/uploads/MwfkRPj2cqoqkX7cvABS2wfB)
Why can't I use an arrangement like this: -
![Image alt text](https://electrical.codidact.com/uploads/D4uCE4k2gLxPuGpMrinbkcUX)

What benefit has a differential amplifier when measuring the signal from a sensor that is remotely located such as in this example: -
![Image alt text](https://electrical.codidact.com/uploads/MwfkRPj2cqoqkX7cvABS2wfB)
Why can't I use an arrangement like this: -
![Image alt text](https://electrical.codidact.com/uploads/D4uCE4k2gLxPuGpMrinbkcUX)

#2: Post edited by

Andy aka‭ · 2020-06-28T11:30:29Z (almost 4 years ago)

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~~What is the benefit a differential amplifier when measuring the signal from a sensor that is remotely located: -~~
![Image alt text](https://electrical.codidact.com/uploads/MwfkRPj2cqoqkX7cvABS2wfB)
Why can't I use an arrangement like this: -
![Image alt text](https://electrical.codidact.com/uploads/D4uCE4k2gLxPuGpMrinbkcUX)

What is the benefit of a differential amplifier when measuring the signal from a sensor that is remotely located such as in this example: -
![Image alt text](https://electrical.codidact.com/uploads/MwfkRPj2cqoqkX7cvABS2wfB)
Why can't I use an arrangement like this: -
![Image alt text](https://electrical.codidact.com/uploads/D4uCE4k2gLxPuGpMrinbkcUX)

#1: Initial revision by

Andy aka‭ · 2020-06-28T11:04:38Z (almost 4 years ago)

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What is the benefit a differential amplifier when measuring the signal from a sensor that is remotely located: -

![Image alt text](https://electrical.codidact.com/uploads/MwfkRPj2cqoqkX7cvABS2wfB)

Why can't I use an arrangement like this: -

![Image alt text](https://electrical.codidact.com/uploads/D4uCE4k2gLxPuGpMrinbkcUX)

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