Method of detecting when a moving compoment attains a final posi

Details Method of detecting when a moving compoment attains a final posi Method of detecting when a moving compoment attains a final posi

1996-03-25

1997-09-16

Karlsen, Ernest F.

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of individual circuit component or element

32420716, 324418, 361154, G01R 3106

Patent

active

056684762

ABSTRACT:
A method of detecting when a moving component of an electromagnetically operable device attains a final position after de-energizing a winding of the device comprises allowing the energizing current to fall to zero and prior to the component reaching its final position, connecting a sensing circuit in parallel with the winding, the current flow in the sensing circuit increasing from the instant of connections and decreasing when the component reaches its final position, said sensing circuit detecting the change in current flow.

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patent: 5293551 (1994-03-01), Perkins et al.
patent: 5481187 (1996-01-01), Marcott et al.

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