On 07/22/2016 05:25 AM, TJoseph Powderly wrote:
> Hi Gene
> some reports on ATS-667
> " What I found is that the polarity of the output is not the same when
> the unit is powered with a tooth in sensing range as it is when a tooth
> is not there! "
>
>
These sensors do NOT detect the presence of a tooth.  They detect the 
PASSAGE of a tooth.  When the tooth is a bit left of the sensor, it 
gives one state, when the sensor passes to the right, the output changes 
state.  They have TWO Hall sensors and a FF, and compare the difference 
of the two sensors to decide what output to give.

Jon

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