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Such devices consist of a magnetic circuit with a gap and a compensation winding, a Hall sensor and an electronic board for processing electrical signals. The Hall sensor acts as a magnetically sensitive element, which is fixed in the gap of the magnetic circuit and connected to the input of the amplifier.
Principle of operation: the measured current creates a magnetic field, the Hall sensor generates the corresponding voltage, which is amplified at the output and applied to the output winding.
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