Option of the bridge circuit based on the frequency-independent two-terminal network
Yu.V. Didenko · 2016 13th International Scientific-Technical Conference on Actual Problems of Electronics Instrument Engineering (APEIE) · 2016
The paper considers the option of balanced four-arm bridge circuits, built on the basis of frequency-independent two-terminal network (FITTN). The theoretical basis for the use of FITTN in balanced four-arm bridge circuits with pulse supply is the property of frequency-independent two-terminal networks. This property consists that after the end of transient the frequency-independent two-terminal network has the constant resistive resistance to electric current in case of influence of the next feeding pulse signal with tension change during its duration under the law of degrees functions of time when the fulfillment not all, and a certain part of the conditions of frequency independence. Consider balancing the bridge circuit is in turn impact on its diagonal generator of sequences of rectangular pulses and the fulfillment of the first balance condition , linearly changing shape and the fulfillment of the second balance condition when executing the first balance condition, cubic pulses and the fulfillment of the third balance condition (without disturbing execution of the first two conditions) and pulses the voltage of which varies according to the law of the fourth degree and fulfillment of all balance conditions. This bridge has the property of separate count, and allows you to identify the multi-element object of measurement that contains the primary transducers - resistive, capacitive and inductive sensors.