Faraday current sensor and Faraday temperature sensor
A technology of current sensor and temperature sensor, used in thermometers, measuring current/voltage, voltage/current isolation, etc., can solve the problems of electronic circuits requiring power and influence
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[0023] Current sensing based on fiber optic current sensors is attractive for monitoring, control and protection of transformers and power distribution systems in smart grids. Compared to some existing current sensors, it has the advantage of being able to separate the sensor head from the electronic processing unit at different locations, and thus does not require any power at the sensor head, making it safe for high voltage applications. Embodiments of the fiber optic current sensor can be configured to achieve other advantages, including small size, light weight, immunity to electromagnetic interference, low power consumption, immunity to current saturation, or other effects. Fiber optic coil-based current sensors using the Faraday effect in the fiber have been widely used in high voltage applications, where the fiber optic coil is wound around a current-carrying conductor. Such fiber optic coil based current sensors are generally more expensive and require cable breakage t...
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