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An Automatic Resistance Thermometer Bridge

1980; Institute of Electrical and Electronics Engineers; Volume: 29; Issue: 4 Linguagem: Inglês

10.1109/tim.1980.4314946

1557-9662

Robert D. Cutkosky,

Structural Health Monitoring Techniques

A microprocessor-controlled bridge is described that utilizes a 15-Hz or 30-Hz square waves to excite a shielded multistage transformer. Transformer taps are relay selected to null the detector. The reading, up to 32 Ωin steps of 1 μΩ,is then displayed. An IEEE-488 bus provides remote operation.