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HP 82143A / HP 82162A foto coupler (encoder) - substitute
01-18-2017, 08:19 AM
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RE: HP 82143A / HP 82162A foto coupler (encoder) - substitute
(01-17-2017 08:53 PM)Hans Brueggemann Wrote:  put DMM to diodes test and connect DMM plus to red wire (it's actually 2 wires, red and white). connect DMM minus to black wire. DMM reads approx. 1 V.
That's consistent with the junction threshold of an LED being around the 1.2V mark.
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RE: HP 82143A / HP 82162A foto coupler (encoder) - substitute - grsbanks - 01-18-2017 08:19 AM



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