magnetic shunt

magnetic shunt

[mag′ned·ik ′shənt]
(electromagnetism)
Piece of iron, usually adjustable as to position, used to divert a portion of the magnetic lines of force passing through an air gap in an instrument or other device.
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References in periodicals archive ?
Design Capacity of Magnetic Shunt Reactor Project of DanDong XinTai Electric
If the deflection differs somewhat from this value, it is to be brought to 100 divisions by adjusting a magnetic shunt which varies the magnetic flux in the air gap of the milliammeter.
To avoid the liability of mistake, or of possible meddling by unauthorized persons, it was made necessary to use a small screwdriver to adjust the magnetic shunt.