Variable reluctance electromagnetic pickup

Details Variable reluctance electromagnetic pickup Variable reluctance electromagnetic pickup

1978-11-13

1980-07-29

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Rotary

310168, H02K 2138

Patent

active

042152860

ABSTRACT:
A variable reluctance pickup for producing electrical pulses in response to the rotation of an adjacent toothed wheel comprises a probe assembly situated tangentially to the path of the wheel teeth. The sensor comprises an elongated core surrounded by a coil and having permanent magnets of opposed polarity at each end of the core. A pole piece extending laterally from one end of the core extends to a point adjacent the path of the teeth of the rotating part. The electrical pulses produced upon part rotation are double the size of pulses produced in the case where only one magnet of equivalent strength to the two magnets is used.

REFERENCES:
patent: 1024418 (1912-04-01), Podlesak
patent: 2304866 (1942-12-01), Wall
patent: 2508524 (1950-05-01), Lang
patent: 3041483 (1962-06-01), Ebbinghaw et al.
patent: 3133214 (1964-05-01), Lawson et al.
patent: 3492518 (1970-01-01), Wayne
patent: 3604965 (1971-09-01), Stroud
patent: 3619678 (1971-11-01), Ruo
patent: 3942045 (1976-03-01), Palazetti

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