master clock

  1. W

    1 sec alternating polarity circuit

    Hello all. Please see the attached photo of a circuit I’d like to copy. I don’t have the actual board a friend of mine sent me the photo. It’s a circuit to produce 1 second alternating pulse using the following IC’s- CD4017B x2, CD4060B x1 and a CD4024B. Can anyone point me to a circuit...
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