A method to reduce sensor bridge dependence on loading and excitation voltage
Paulo José Abatti, Bertoldo Schneider · Review of Scientific Instruments · 1994
A method to reduce the sensor bridge circuits readout dependence on loading, introduced by the meter and/or amplifier, and on eventual variations on excitation voltage is described. Experimental results on simulated strain gages and thermistors bridges, where both power and signal have been coupled directly using transformers (relatively low load impedances), are also reported.