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Thread: Hei rpm ?
          
   
   

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  1. #1
    firebird77clone's Avatar
    firebird77clone is offline CHR Member Visit my Photo Gallery
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    Ok, as I recall, and it's been a decade since I played with points, they sink IE they ground the coil. So, the HEI tach outtput is probably NPN?
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    Education is expensive. Keep that in mind, and you'll never be terribly upset when a project goes awry.
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    34_40's Avatar
    34_40 is offline CHR Member Visit my Photo Gallery
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    Quote Originally Posted by firebird77clone View Post
    Ok, as I recall, and it's been a decade since I played with points, they sink IE they ground the coil. So, the HEI tach outtput is probably NPN?
    Not sure what you're trying to say.. But, you cannot ground any coil! Motor won't have any ignition system with a coil connected to ground.

    What's "NPN"?

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