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Tachometer circuit-need help

Discussion in 'General Electronics Discussion' started by BCISam, Mar 29, 2013.

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  1. BCISam


    Mar 29, 2013
    Can't find any info on tractor tach ckt using 8 pin SN29736P1. Replaced ic checked every component. New unit costs $1000.00 Alternative is make new pbc using LM2907 but will it drive a 50Ma speed MTR??
  2. john monks

    john monks

    Mar 9, 2012
    Do you have the make and model of the tractor?
    According to the datasheet the LM2907 will drive a load up to 50mA.
  3. BCISam


    Mar 29, 2013
    Thanks for response; Tractor is a John Deere 2750, Tach assy is JD Part # AL35166. Tryed all sites I know for data sheet on SN29736P1 don't even know pin out or block diagram. Have traced out the ckt & have componet values.
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