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Strobed Supply Improves Strain Gauge Bridge Efficiency (LT10

2016-05-18 06:51  
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The following schematic diagram shows a? method to reduce power consumption without sacrificing the bridge signal output level of a strain gauge.? Many situation will be applicable for this strain gauge bridge signal conditioning circuit, where continuous output is not a must. In the long time frame, this circuit will in idle state? for almost all the time, with only intermittent quick active states? (on times). A very extreme example for this signal conditioning circuit is where remote weight or height level? of a storage tanks is sampled once per hour. The idle current is around 150 μA, with active state current typically 50 mA (which is occurs at few milliseconds periods).

Strobed power strain gauge bridge circuit schematic


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