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  2. Current sensing - Wikipedia

    en.wikipedia.org/wiki/Current_sensing

    A current sensor is a device that detects electric current in a wire and generates a signal proportional to that current. The generated signal could be analog voltage or current or a digital output. The generated signal could be analog voltage or current or a digital output.

  3. Fiber-optic current sensor - Wikipedia

    en.wikipedia.org/wiki/Fiber-optic_current_sensor

    A fiber-optic current sensor (FOCS) is a device designed to measure direct current. Utilizing a single-ended optical fiber wrapped around the current conductor, [1] FOCS exploits the magneto-optic effect (Faraday effect). [2] The FOCS can measure uni- or bi-directional DC currents up to 600 kA, with an accuracy within ±0.1% of the measured value.

  4. Earth-leakage circuit breaker - Wikipedia

    en.wikipedia.org/wiki/Earth-leakage_circuit_breaker

    An earth-leakage circuit breaker (ELCB) is a safety device used in electrical installations to prevent shock. It consists of either a current sensing mechanism, otherwise known as an RCD (aka GFCI), or a voltage sensing mechanism, more specifically known as a voltage-operated ELCB. The voltage-operated ELCB fell out of favour after the ...

  5. Hall effect sensor - Wikipedia

    en.wikipedia.org/wiki/Hall_effect_sensor

    The device has three terminals. A sensor voltage is applied across two terminals and the third provides a voltage proportional to the current being sensed. This has several advantages; no additional resistance (a shunt, required for the most common current sensing method) needs to be inserted in the primary circuit. Also, the voltage present on ...

  6. Shunt (electrical) - Wikipedia

    en.wikipedia.org/wiki/Shunt_(electrical)

    A shunt is a device that is designed to provide a low-resistance path for an electrical current in a circuit. It is typically used to divert current away from a system or component in order to prevent overcurrent. Electrical shunts are commonly used in a variety of applications including power distribution systems, electrical measurement ...

  7. Sensor - Wikipedia

    en.wikipedia.org/wiki/Sensor

    Different types of light sensors. A sensor is a device that produces an output signal for the purpose of detecting a physical phenomenon.. In the broadest definition, a sensor is a device, module, machine, or subsystem that detects events or changes in its environment and sends the information to other electronics, frequently a computer processor.

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