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Old 16-03-2019, 01:43 PM
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bojan
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Join Date: Jul 2006
Location: Mt Waverley, VIC
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Quote:
Originally Posted by Cliff View Post
... is for feedback of speed...
Exactly right..
Bisades LED, there is also phototransistor or diode.. very simple circuit.

It may be good to check (with CRO) if it does generate pulses..
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