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Old 04-15-2009, 08:39 PM   #10 (permalink)
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Darin, I think you're asking for a small logic circuit that would drive something like relays (with low ohmic resistance in the ON state) and driven by some sort of clock that could multiplex one input into four outputs. If so, maybe this would work. It's a 555 clocking a JK Flip Flop. The sequencing comes from wiring a 4 NAND gates between the 555, FF and some drivers. The drivers could drive relays, MOSFETs, IGFETs, etc:

The timing diagram:
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Any sufficiently advanced technology is indistinguishable from magic. - Clarke's Third Law
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