Wheatstone bridge


Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.

Wheat·stone bridge

(wēt'stōn),
an apparatus for measuring electrical resistance; four resistors are connected to form the four sides or "arms" of a square; a voltage is applied to one diagonal pair of connections, while the voltage between the other diagonal pair is measured, for example, by a galvanometer; the bridge is "balanced" when the measured voltage is zero; then, the ratios of the two pairs of adjoining resistances must be identical.

Wheat·stone bridge

(wēt'stōn brij)
An apparatus for measuring electrical resistance; four resistors are connected to form the four sides or "arms" of a square; a voltage is applied to one diagonal pair of connections, while the voltage between the other diagonal pair is measured, e.g., by a galvanometer; the bridge is "balanced" when the measured voltage is zero; then, the ratios of the two pairs of adjoining resistances must be identical.

Wheatstone bridge

(hwēt′stōn″)
[Sir Charles Wheatstone, Brit. scientist and inventor, 1802–1875]
An electric circuit with two branches, each containing two resistors. These branches are joined to complete the circuit. If the resistance in three resistors is known, the resistance of the fourth, unknown, one can be calculated.

Wheatstone,

Charles, English physicist, 1802-1875.
Wheatstone bridge - an apparatus for measuring electrical resistance.
References in periodicals archive ?
Thus, at equal supply voltage and supply current the output voltage of an offset-free pseudo-Hall device from Figure 12(a) is 30% smaller than the output voltage of a Wheatstone bridge sensor (0.35/0.5 = 0.70 = 1 - 0.30).
Miranda, "Comparison of microstrain indicators measurements based on Anderson's Loop and Wheatstone Bridge", in Proc.
For a balanced Wheatstone bridge Johnson equal to the noise of a single resistor, the overall r.m.s.
They generally function as a Wheatstone bridge. That is, [R.sub.1] = [R.sub.2] = [R.sub.3] = [R.sub.4], [DELTA][R.sub.1] = [DELTA][R.sub.3] = -[DELTA][R.sub.2] = - [DELTA][R.sub.4].
The strain gages were connected to a circuit, called a Wheatstone bridge, and the output signal of the bridge was amplified and collected using an analog to digital converter, which was controlled by a Basic Stamp microprocessor.
Total quantity or scope: lot 1 Claws meter Min 10 pcs, 20 pcs cant max Wheatstone bridge Min 1pc, cant max 2 pieces Ptr multimeter.
A bolometer in combination with a Wheatstone bridge can be used in two ways to measure RF power.
For such strain measurement resistive strain gauges along with unbalanced Wheatstone bridge circuits are widely used [5].
The load cell is a precision spring mechanism with strain gauges placed upon it that are arranged in a Wheatstone bridge circuit.
Rejustors are passive adjustable resistors whose ohmic values can be field-adjusted to better than 0.1 percent tolerances, desirable for Wheatstone bridge sensor based applications.
* A seismic mass, protective over range stop and a full-active, piezoresistive Wheatstone bridge that provides minimal zero shift, lower power consumption and DC response capability.
They transmit the signals through a Wheatstone bridge to a data acquisition board.