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Old 5th March 2003, 11:44 PM   #1
Cobra2 is offline Cobra2  Norway
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Default Input selector: need help

I'm trying to make a relay controlled input selector, but I need some input on how to control the "relay-shifting";

Plan is to configure in such a way that when one relay's turn-on, it will turn off the previous relay.
(that only one relay can stay on at the time).

Can you please suggest what logic I need for controlling
the "8 Relay module" in this way? (picture).

(This circuit will also be remote controlled).

Arne K
NORWAY
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File Type: gif relay_sel_8.gif (15.8 KB, 299 views)
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Old 8th March 2003, 08:31 AM   #2
Cobra2 is offline Cobra2  Norway
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Default Where are you "logic" guys?

I found this circuit;
http://www.members.shaw.ca/roma/twenty-two.html
that will do the intended job, but I think it could be simplified?
And made with ttl ?

Any comments on this please?

Arne K
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