Tachogenerator having a magnetoresistance stator coil
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United States of America Patent
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-
Apr 7, 1987
Grant Date -
N/A
app pub date -
Jan 28, 1985
filing date -
Jan 30, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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