Apparatus for obtaining an information on the motion of a moving element, preferably for rotational speed of a rotating element in an automobile
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United States of America Patent
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Aug 20, 1985
Issued Date -
N/A
app pub date -
Aug 10, 1984
filing date -
Jul 2, 1981
priority date (Note) -
Expired
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Abstract
Apparatus for determining rotational speed includes a sensor for generating electrical pulse signals representative of rpm in a conventional manner. The electrical pulses are converted to light pulses at the sensor and transmitted to an evaluation circuit, where they are reconverted into electrical pulses that are processed by the evaluation circuit. Interference signals that a rise during the transmission of electrical pulses to the evaluation circuit are thereby eliminated.
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