What is the Wheatstone bridge?
Wheatstone bridge is a type of electrical circuit known as a bridge circuit and is used to determine the district element. This can be used to test resistance of different components such as resistors, wire parts and any other electrical conductor. The typical bridge circuit of the wheat stone type uses four resistors divided into two legs. By balancing one foot of the perimeter with a solid, known resistance to an unknown resistor, it is possible to calculate the resistance of the tested component. He was first developed at the beginning of the 19th century by a man named Samuel Christie, but was the popular Sir Charles Wheatston, whose name is now known. The principles that work the Wheatstone bridge, and the methods for which many improvements and variations have been developed since its invention.
In its most basic form, the wheat stone bridge consists of an electric circuit with two legs, an electric input sourceWith constant voltage, four resistors, including two with solid, known resistance, one with variable resistance that can be monitored as it changes and the resistor to be tested. The voltage meter is also required. This basic configuration allows testing of any conductive material to determine its resistance to a very high degree of accuracy.
The circuit is designed to divide the incoming current into two legs that are overwhelmed together. Each leg has two elements of the resistor. One resistance of each foot has a solid, known resistance. On one leg, this resistor is paired with a variable resistor and there must be a means of monitoring resistance as it changes. The overflow leg, the resistor with known resistance is paired with the component to be tested. When the current is introduced, the variable resistor is manipulated until the voltage meter replaces the zero current flow, which means that each foot resistances are exactly identical.
checking the resistance of variable resistor's resistor is then easy to useRecount the test component resistance. It is possible to build the Wheatstone bridge using three resistors with fixed resistors if all values are known. The calculations associated with finding the resistance of the test component are more complicated when using a wheat stone bridge of this type, but the basic principles are the same.