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  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Recent content by cdsumlin

  1. C

    Help..Opto-Refective switch

    using a 330 ohm r3 works, but the rise/fall times may be slow, have to experiment now, thanks for your help.
  2. C

    Help..Opto-Refective switch

    I'l try it tonight, thanks Eric.
  3. C

    Help..Opto-Refective switch

    Hi, and thanks in advance for any help. I am building a crank sensor to interface with my computer. The part I needed is obsolete, so I ordered the substitute part suggested. Unfortunately I missed something and the wireing from the "opto-reflective IC" is different. I need help putting this...
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