METER MEASURING PARAMETERS OF TWO-TERMINAL NETWORKS Russian patent published in 2004 - IPC

FIELD: measurement of physical quantities. SUBSTANCE: proposed meter includes generator of rectangular pulses which first output is connected to branch of two-terminal network. Output of branch is connected to input of noninverting voltage follower which output is coupled to input of inverting amplifier. Output of amplifier is connected to first input of adder whose second input is coupled to first output of generator. Output of adder is connected through blocking capacitor to first input of null indicator whose second input is connected to second output of generator. EFFECT: decreased measurement error due to exclusion of error components caused by parasitic capacitance relative to ground. 1 dwg