H - Electricity – 01 – F
Patent
H - Electricity
01
F
318/1, 364/28
H01F 7/18 (2006.01)
Patent
CA 1177530
24385 ABSTRACT OF THE DISCLOSURE An arrangement for controlling the rate of motion of a plunger of a D.C. electro-magnetic solenoid employs a solid state switching device connected in series with the primary winding of the solenoid. The rate of change of the flux in the primary winding induces a voltage in a sensing winding, which voltage is integrated and used to control the "on" time of the switching device so as to control the flux in the main coil.
394896
Ridout & Maybee Llp
Thyssen Elevator Holding Corporation
LandOfFree
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