This animation, created byï¿½Southwest Center for Microsystems Education (SCME), allows viewers to observe the operation of a micropressure sensor and the packaging of a micropressure sensor array. The animation illustrates "the sensing circuit for the pressure sensor is a Wheatstone Bridge configuration with two variable resistors (strain gauges) that change in resistance with a change in pressure. The sensing circuit is mounted on top of a fixed pressure chamber referred to as the reference chamber. When the pressures above and below the sensing circuit are different, the membrane flexes causing a change in bridge resistance."ï¿½A supporting learning module,ï¿½Wheatstone Bridge, can be downloaded from the SCME website under Educational Materials.
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