Electrical switch

Details Electrical switch Electrical switch

1998-09-21

1999-11-30

Elms, Richard T.

Electricity: measuring and testing

Magnetic

Displacement

307104, 307112, 336135, G01B 714, G01B 730, H01F 2106

Patent

active

059948965

ABSTRACT:
A switch lever of an electrical switch can be moved into various switch positions. A ferrite core is disposed at the switch end of the switch lever. A primary coil and a secondary coil are disposed about each switch setting. The primary coil induces a voltage in each secondary coil. The amplitude of the induced voltage is greatest in the secondary coil in the vicinity of which the ferrite core is situated. The actually adopted switch position can be determined from the difference in the voltages.

REFERENCES:
patent: 4100480 (1978-07-01), Lytle et al.
patent: 4857919 (1989-08-01), Braswell
patent: 5621317 (1997-04-01), Wozniak
patent: 5841273 (1998-11-01), Muraji

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