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tach

  1. mojozoom

    Comparator help please -tach/shift light project

    My old car uses a 1mA current driven tach movement and the stock circuit isn't compatible with the MSD ignition box I use, and the adapter they sell to make the tach work buzzes like the dickens. So I worked up a tach circuit based on the current tach diagrams in the LM2907 datasheet that'll...

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