Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Lumped type parameters
Patent
1992-02-21
1993-10-26
Snow,
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
Lumped type parameters
324140R, G01R 2700
Patent
active
052569799
ABSTRACT:
A method for measuring an unknown voltage (V.sub.IN) using a voltage divider network in such a way that uncertainties in the values of the resistances do not affect the measurement. The unknown voltage is divided into three fractional voltages, the fractional voltages are measured, and the unknown voltage is computed on the basis of the fractional voltages. The unknown voltage is divided with a voltage divider comprising first, second and third resistors, and a first voltage (V.sub.o1) is measured across the first resistor, a second voltage (V.sub.o2) is measured across the second resistor and a third voltage (V.sub.o3) is measured across the third resistor. The unknown voltage V.sub.IN is computed in accordance with the equations disclosed in the specification.
REFERENCES:
patent: 3320530 (1967-05-01), Pearlman
patent: 3454877 (1969-07-01), Julie
patent: 3519931 (1970-07-01), Bradley
patent: 3614611 (1971-10-01), Benjamin
patent: 3702401 (1972-11-01), Parkin
patent: 4274143 (1981-06-01), Brodie et al.
patent: 4786859 (1988-11-01), Arseneau et al.
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