What Is a Wheatstone Bridge?
A device consisting of 4 resistors used to measure the resistance of one of the resistors (the remaining 3 resistors are known). 4 resistors form a square. [1]
- Wheatstone bridge (also known as
- When the bridge is balanced, the current in the branch where the galvanometer is located is:
- (1) The current flowing through R1 and R4 is the same (recorded as I1), and the current flowing through R2 and R3 is the same (recorded as I2);
- (2) The potentials at B and D are equal, that is,
- Wheatstone bridge is a kind of detection circuit. Although its structure is simple, its accuracy and sensitivity are relatively high, and it has been widely used in medical diagnostic and detection instruments. [2]
- Wheatstone Bridge
- The measurement sensitivity of Wheatstone bridge is of great significance in scientific research and production applications. Wheatstone bridges are widely used in contemporary scientific surveys, and they are also widely used in automatic control.
- Wheatstone bridges are also widely used in weighing detection elements.