Electronic control type throttle valve apparatus,...

Details Electronic control type throttle valve apparatus,... Electronic control type throttle valve apparatus,...

2007-06-26

2007-06-26

Hollington, Jermele (Department: 2829)

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Magnetic saturation

Reexamination Certificate

active

10986150

ABSTRACT:
In an electronic control type throttle valve apparatus, a throttle valve position sensor includes a magnet provided at a throttle valve shaft and a hall element which output changes in accordance with the rotational deviation of the magnet. The hall element is housed within a sensor chip together with an amplifier circuit. In a control unit provided separately from the sensor chip, there are provided with an A/D conversion circuit for converting an analog output from the hall element through the amplifier circuit into a digital signal and a digital processing circuit for performing temperature compensation and zero-span adjustment of the hall element in a digital manner.

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