Tachogenerator having a magnetoresistance stator coil

Details Tachogenerator having a magnetoresistance stator coil Tachogenerator having a magnetoresistance stator coil

1985-01-28

1987-04-07

Salce, Patrick R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 72, 324208, 338 32R, G01B 724, H01L 4308, H02K 1100

Patent

active

046563776

ABSTRACT:
A tachogenerator has a magnetoresistance film coil formed on a stator surface along a circular path concentric with a rotor axis. The coil has a spatially periodic structure, with multiple spaced-apart lateral components series connected with longitudinal components. The stator surface is opposite to a rotor surface having multiple equiangularly spaced magnetic pole faces with alternately opposite polarities. Current passed through the coil develops voltage variations. Undesirable small voltage variations resulting from manufacturing tolerances are averaged to zero at the coil output terminals.

REFERENCES:
patent: 3162804 (1964-12-01), Parsons
patent: 4109170 (1978-08-01), Fujita et al.
patent: 4359657 (1982-11-01), Matsumoto et al.
patent: 4418372 (1983-11-01), Hayashida et al.
patent: 4488076 (1984-12-01), MaCleod
patent: 4490674 (1984-12-01), Ito
patent: 4506217 (1985-03-01), Rothley et al.
patent: 4599561 (1986-07-01), Takahashi et al.

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