Nonetheless, the Wheatstone bridge is capable of providing upto a 0.1 percent accuracy. Although it is still a reliable and accurate device, it isn't as user-friendly as the latest digital multimeters. The Wheatstone bridge has most likely outlasted any previous electrical measuring tool.
This bridge circuit became renowned as the Wheatstone bridge as a result of his thoughts and experiments. Its importance, unfortunately, was not appreciated until 1847, when Sir Charles Wheatstone demonstrated the method in which his bridge circuit could be used to produce reliable electrical measurements. Christie designed this circuit as shown in Fig. To identify a state of balance, a null detector, originally a cheap and reliable galvanometer, is attached between the parallel arms.Ī researcher named S. To include a current source through the connection, a DC voltage source is linked between a diamond-shaped network. It is made up of a couple of parallel resistance arms, each having two series components, often resistors. The Wheatstone bridge circuit is the most well-known and commonly studied bridge circuit in electronics classes. One arm of the bridge may comprise a detector device sensitive to physical parameters such as temperature or pressure while working as a controller.Additional external circuits can be controlled by bridge circuits.Bridge circuits can be used to take precise measurements.The indication is determined by the calibration of an indicating equipment or the meter.The output of a balanced bridge is zero.Bridge circuits work on the basis of null-indication theory.Some of the main features of a bridge circuit are given below:
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