Electricity: measuring and testing – Electrical speed measuring – Including speed-related frequency generator
Patent
1994-08-01
1996-04-23
Snow, Walter E.
Electricity: measuring and testing
Electrical speed measuring
Including speed-related frequency generator
324173, 32420724, 324546, G01P 348, G01P 354, G01B 714, G01R 3106
Patent
active
055107079
ABSTRACT:
A wheel speed sensor input circuit with sensor status detection having a comparator with a first input and a second input where both the first and second inputs are connected to a wheel speed sensor having electrical resistance where, when the status of the wheel speed sensor is to be ascertained, the second input is connected to ground through a diode using a switching transistor and the output of the comparator is driven high or low depending on the speed sensor electrical resistance where the output is high if the speed sensor is operational.
REFERENCES:
patent: 5101155 (1992-03-01), Oehler et al.
Eaton Corporation
Gordon Howard D.
Snow Walter E.
Uthoff Jr. Loren H.
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