Need help with 7492 counter

Discussion in 'General Electronics Chat' started by ctonton, Mar 25, 2011.

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  1. ctonton

    Thread Starter New Member

    Mar 24, 2011
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    I can not for the life of me get a 7492IC to work. I am trying to use a tach signal from an engine, square it off at TTL, use a 7492IC to divide it by twelve, then use it to feed the ECM as a useable vehicle speed signal. My circuit all seems to be working just fine except for the divider. Can anyone tell me how to use this IC? I t has 5v power on pin 5, ground on pin 10, input on pin 14, pin 12 is wired to pin 1, and output on pin 8. Still uncertain what to do with the 2 resets on the chip but have tryed leaving them open and tried grounding them but I can not get the chip to do anything. Very frustrated and any help is appreciated.
     
  2. Papabravo

    Expert

    Feb 24, 2006
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  3. bertus

    Administrator

    Apr 5, 2008
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    Hello,

    Papabravo is right.
    No automotive modifications are allowed over here.

    Bertus
     
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