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encoder behavior... i don't get it


ultra

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i have some alps encoders (ec12 series i believe) and i don't understand their behavior.  when i turn it, all three leads connect, which obviously gives me bad results when changing values on my sequencer.  does anybody have an idea of what's going on here?

thanks,

drew

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Sounds about right.

Three leads.. A, B, and Common.

Phase A will be connected to Common 50% of the time

Phase B will be connected to Common 50% of the time

Phases A and B are 90 degrees out of phase.

So...

All three terminals will be shorted together 25%

of the time.

You can see that pattern on page 5 of the Alps datasheet.

If my description matches your encoder, then it appears

to be working well.

Good Luck,

LyleHaze

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