Strain gauge measuring system

Details Strain gauge measuring system Strain gauge measuring system

1985-03-06

1986-08-19

Ciarlante, Anthony V.

Measuring and testing

Dynamometers

Responsive to force

73766, G01D 304

Patent

active

046062319

ABSTRACT:
In the disclosed measuring system, the strain in opposingly stressed strain gauges is measured by alternately driving currents through the gauges, and measuring the resulting differences in the alternate currents. Two reversely poled transistors, or two FETs, form low impedance switches that alternately drive the currents through the gauges. A constant current source or a resistor provides a current path to both gauges.

REFERENCES:
patent: 2377869 (1945-06-01), Elliott
patent: 3582690 (1971-06-01), Yerman
patent: 3836796 (1974-09-01), Solomon et al.
patent: 4071813 (1978-01-01), Dobkin
patent: 4459856 (1984-07-01), Ko et al.

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