| 摘要 |
PROBLEM TO BE SOLVED: To provide a sensor circuit capable of binarizing a ripple component without holding peaks neither bottoms. SOLUTION: A first comparator 36 compares a threshold potential lower than an initial value potential by 50mV before engine start with an output potential from an amplifier 14. A second comparator 38 compares a threshold potential higher than the initial value potential by 50mV with the output potential from the amplifier 14. A logic 40 monitors inversion of outputs of the first comparator 36 and the second comparator 38 and selects a first switch 42 or a second switch 44 connected to the comparator of which the output has been inverted first. COPYRIGHT: (C)2005,JPO&NCIPI
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