An optical current comparator
| Autor: | B C B Chu, Y N Ning, David A. Jackson |
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| Rok vydání: | 1993 |
| Předmět: | |
| Zdroj: | Measurement Science and Technology. 4:1187-1193 |
| ISSN: | 1361-6501 0957-0233 |
| DOI: | 10.1088/0957-0233/4/11/001 |
| Popis: | The design and performance of an optical current comparator based upon a triangular shaped bulk glass sensing element are presented. The effect of the Faraday rotation produced in the sensing element by an unknown large current is annulled by a smaller known current of opposite polarity, thus giving an absolute measurement of the unknown current. The design requirements of the sensor configuration are analysed theoretically by computer simulation and tested experimentally for both ideal and non-ideal sensors. The sensors have many applications in the power distribution industry, as both absolute and differential AC and DC measurements up to very high currents are possible. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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