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Using a boostcap CAN work, I started working on one myself but never got around to finishing it unfortunately and due to divorce I now live in a small apt. where testing such a thing isn't feasible heh. Anyway, the first thing you need to know is you CANNOT use a SCR to fire it. It will take too long to discharge and melt your coil and plastic firing tube ...


The last page of the datasheet contains a block diagram. It runs on a clock it gets from the oscillator circicuitry, and it uses the clock to run the state machines of the internal blocks. The keyboard matrix block scan for button presses, and when a push is detected, it will generate the correct amount of pulses with timing based on the clock.

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