Título:
Alterating current sensor using second harmonic detection
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Autor:
Ferrari, José
Perciante, Daniel
Dubra, A
Arnaud, Alfredo
Frins, Erna
Perciante, Daniel
Dubra, A
Arnaud, Alfredo
Frins, Erna
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Tipo de documento:
Artículo
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Descriptores:
ELECTRÓNICA
Año de publicación:
2000
Contenido:
Resumen:
We describe a novel optical sensor based on the Faraday effect for measuring ac. The sensing element is a piece of material of high Verdet constant placed between polarizers. When the angle between the polarizers differs by 45°, a signal of twice the frequency of the ac is generated—in addition to the usual signal with the same frequency as the current. The quotient of these two signals allows a normalized output to be obtained that is proportional to the amplitude of the current. Experimental results demonstrating the practicality of the procedure are presented.
Descripción:
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Editorial:
Optical Society of America
EN:
Applied optics, 2000, v. 39, no. 25
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Citación:
Ferrari, José, Perciante, Daniel, Dubra, A., Arnaud, Alfredo, Frins, Erna. Alterating current sensor using second harmonic detection [en línea] Applied optics, 2000, v. 39, no. 25
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Departamento académico:
Electrónica
Grupo de investigación:
Microelectrónica
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