SIMPLE STAIRCASE GENERATOR

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U2 is a decade counter/divider. U1 is used as a switch debouncer. For a self-generating system, connect a resistor between pins 2 and 3 of a U1 value that should be between 10 k ohm and several M ohm, depending on desired frequency. C1 can also be varied to change frequency. Also, S1 can be omitted in the self-generating version.
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