Method of increasing the cast-off speed of the armature in an el

Details Method of increasing the cast-off speed of the armature in an el Method of increasing the cast-off speed of the armature in an el

1999-11-12

2000-12-26

Leja, Ronald W.

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

For relays or solenoids

361155, 361194, H01H 4706

Patent

active

061668966

ABSTRACT:
A method of increasing a cast-off speed of an armature from a pole of an electromagnet of an electromagnetic actuator, includes the following steps: holding the armature at the pole against a force of a resetting device by maintaining an electric holding current flow through a coil of the electromagnet; and launching the armature from the pole by switching off the holding current; and at a predetermined moment during a release period of the armature from the pole, passing a cast-off current for a predetermined period through the coil. The cast-off current has a polarity opposite to the polarity of the holding current.

REFERENCES:
patent: 4453652 (1984-06-01), Merkel et al.
patent: 5748433 (1998-05-01), Schrey et al.

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