Magnetic actuator using modulated flux

Details Magnetic actuator using modulated flux Magnetic actuator using modulated flux

1978-12-29

1980-12-30

Broome, Harold

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

With magneto-mechanical motive device

101 9329, 101 9348, 335230, H01F 718

Patent

active

042426588

ABSTRACT:
Magnetic actuator arrangement in which the actuator or armature is retained in a cocked position by unidirectional magnetic flux having a density that cyclically varies in magnitude with time and is released by selective energization of a bucking coil to counteract the retention flux when the flux density is less than maximum. The modulated retaining flux may be made sufficient at its maximum density to retract the released actuator to the cocked position.

REFERENCES:
patent: 3146381 (1964-08-01), Moreau
patent: 4020433 (1977-04-01), Uchidoi et al.

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