METHOD OF DETERMINING PARAMETERS OF MULTIELEMENT TWO-TERMINAL NETWORKS Russian patent published in 2020 - IPC G01R27/02 

FIELD: monitoring and measuring equipment.

SUBSTANCE: invention relates to instrumentation, particularly, to methods of determining parameters of two-terminal networks. Essence of the method consists in conducting three measurement steps. On the first and second measurement steps, a constant voltage jump E₀ is transmitted to the investigated two-terminal networks, the value of which is known, and after completion of the transient process, voltage values U₁ and U₂ are determined on the basis of reference elements – resistor R₀ and capacitor C₀₁, which are alternately connected to measuring circuit. Third stage of measurements is carried out based on reference capacitor C₀₂ and measuring circuit made on the basis of operational amplifier. In amplifier inverting input circuit includes reference capacitor, and negative feedback circuit is measured two-terminal network, to which DC voltage jump E₀ is fed and instantaneous values of voltages u₃(t₁) are determined, at fixed moments of time t₁, and t₂, not exceeding duration of transient process in measuring circuit. Parameters of the two two-terminal network are determined based on the results of four voltage measurements.

EFFECT: shorter time and number of measurements carried out during the transient process by performing a part of measurements after completion of the transient process.

1 cl, 5 dwg, 1 tbl