Electricity: electrical systems and devices – Control circuits for electromagnetic devices – Systems for magnetizing – demagnetizing – or controlling the...
Patent
1995-11-30
1997-10-14
Fleming, Fritz
Electricity: electrical systems and devices
Control circuits for electromagnetic devices
Systems for magnetizing, demagnetizing, or controlling the...
361144, 361147, 335291, B66C 108
Patent
active
056778210
ABSTRACT:
A method and device for detecting full magnetization of an electro-permanent magnet which includes at least one permanent magnet part and at least one coil. Current is passed through the coil over a certain period of time in order to magnetize the electro-permanent magnet. The current through the coil of the magnet is measured during magnetization, and an increase of the derivative of the current curve is detected. A signal is given to an operator or computer if an increase in the current derivative is detected, which indicates full magnetization of the electro-permanent magnet.
Fleming Fritz
Maritime Hydraulics A.C.
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