Electromagnetic rotation detecting apparatus

Details Electromagnetic rotation detecting apparatus Electromagnetic rotation detecting apparatus

1983-06-09

1985-04-30

Myracle, Jerry W.

Measuring and testing

Test stand

For engine

G01M 1500

Patent

active

045136092

ABSTRACT:
A rotation detecting apparatus includes a first electromagnetic pickup of the electromagnetic coil type positioned to face a single signal rotor in the diametrical direction thereof and generate a first rotation signal, a permanent magnet received in a recess formed in the principal plane surface of the signal rotor, and a second electromagnetic pickup including a magnetoresistance effect element positined separately above the upper surface of the permanent magnet and operatively associated with the magnet to generate a second rotation signal.

REFERENCES:
patent: 3842299 (1974-08-01), Lombard
patent: 4036190 (1977-07-01), Bigliani et al.

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