While in some devices, there is an integrated circuit providing amplification of minute voltage changes, it’s also common to have direct access to the bridge, such as in a strain gauge/load cell. You’ll find Wheatstone bridge circuits in all kinds of compression and tension-based devices, such as air and fluid pressure sensors, strain gauges and more. Many sensor types use a Wheatstone bridge internally, as the resistance measured in the circuit can be linked back to some other phenomenon that causes the resistance of the sensor to change. In this article, we’ll take a look at Wheatstone bridge circuits, how they work and how we can effectively use them with modern electronics. Despite the simplicity of a Wheatstone bridge, it can be a challenge to make use of one effectively. If you need to measure resistance precisely, a Wheatstone bridge is a simple circuit that provides a way to do so by taking a voltage measurement.
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