Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of individual circuit component or element
Patent
1990-08-24
1991-10-22
Wieder, Kenneth A.
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
Of individual circuit component or element
324 72, G01R 3102
Patent
active
050599100
ABSTRACT:
An optical transformer comprises at least two potential dividing capacitors connected in series to each other are connected between a high-voltage conductor and an intermediate electrode or between the intermediate electrode and the ground, and optical voltage sensors connected in parallel to the respective potential dividing capacitors and capable of modulating light in accordance with voltage. In another form, the optical transformer has a single potential dividing capacitor connected between a high-voltage conductor and an intermediate electrode or between the intermediate electrode and the ground, and at least two circuits connected in parallel with the potential dividing capacitor, each circuit including a series the connection of an optical voltage sensor for modulating light in accordance with the voltage and a resistor or an impedance.
REFERENCES:
patent: 3590374 (1971-06-01), Evans et al.
patent: 3869665 (1975-03-01), Kenmochi et al.
patent: 4025845 (1977-04-01), Lhommelet et al.
patent: 4384248 (1983-05-01), Matsuda et al.
patent: 4549132 (1985-11-01), Yamigawa et al.
Mitsubishi Denki & Kabushiki Kaisha
Mueller Robert W.
Wieder Kenneth A.
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