Measurement system signal isolation

Details Measurement system signal isolation Measurement system signal isolation

1977-09-19

1978-11-21

Rolinec, Rudolph V.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With coupling means

73362SC, 307310, 324117R, G01R 120, G01K 720

Patent

active

041268261

ABSTRACT:
A transformer primary is first biased with a current sustained at least long enough for any secondary voltage to drop to zero. Then the primary is open circuited. The resultant secondary voltage is coupled to a constant voltage device such as a shunt regulator. A voltage related to the shunt regulator voltage will then appear in the open circuited primary and will be available for measurement fully isolated from the secondary. If the shunt regulator is made to operate as a function of a condition to be measured, an isolated remote measure of the condition is present at the primary of the transformer.

REFERENCES:
patent: 3422352 (1969-01-01), Paulkovich
patent: 3742764 (1973-07-01), Dauphinee

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