Kim, "Improvement of wireless power transmission efficiency of implantable subcutaneous devices by closed magnetic circuit
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Magnetic fluid seal of rotation shaft is a kind of non-contact seal, with a closed magnetic circuit
consisted by a ring permanent magnet, magnetic pole shoes and a magnetic rotation shaft.
It is worth noting that this specimen arrangement is substantially a transformer: the exciting coil is primary side, the measuring coil is secondary side, and the specimen and yokes form a closed magnetic circuit
. The flux density B in the specimen is proportional to the voltage of the measuring coil while the magnetic field strength H in the specimen can be calculated by detecting the current of the exciting coil.
We also compare the measurement results obtained in open magnetic circuit and closed magnetic circuit
Some of the major advantages of tubular variable reluctance machines, both with open or closed magnetic circuit
, are given in .
Soft iron plates direct the flux radially between the poles and create a closed magnetic circuit
The latching phase shifters use either a closed magnetic circuit
or a magnetic circuit with very small air gaps.
In small magnetic plates, the magnetized areas often come together to form closed magnetic circuits