Strain_gauge_with_thermoelectric_junction_effects

Published:2009/7/22 3:41:00 Author:Jessie | From:SeekIC

This circuit shows the previous strain-gauge example (Fig. 1-11) with low-level nodes highlighted and shown as thermoelectric junctions. An even number of connections cancels the errors as long as no temperature gradients appear across the circuit. Such gradients are best prevented by symmetric PC layouts with traces sized for matched thermal conductivity. In extreme cases, the circuitry can also be insulated from external heat sources and drafts.



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