A concept as below could work, I think.
It is just a concept though. Can be modified for anode / cathode path.
You will need 8-transistors + 4 for the common ones.
ULN type of drivers could be handy here, but you need to make use of them with respect to anode/cathode issue.
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Last edited by sayzer; - 16th October 2006 at 19:09.
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