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Make your own opto-isolator? Answered

I am wondering if it is possible to make your own opto-isolator from an led taped to a photo-resistor with electrical tape. Is this possible?

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gmoonBest Answer (author)2011-07-20

It's not just possible, it's very common. I used to make my own compressors (for guitar) back in the 80's with an opamp and a home-rolled LDR.

Weber has a webpage describing how to do it (they sell kits for them).

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josh1324 (author)gmoon2011-07-20

cool, could you send ma a schematic for the compressor?

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gmoon (author)2011-07-20

Look on your Orangeboard, I can't answer your question directly--replies won't work on a "best answer!"

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rickharris (author)2011-07-20

Very easy put an LED and a photo diode or transistor in a bit of black tubing. How you choose your LED and receiver effects how the system works for your application.

http://preher-tech.com/Documents/opto-isolators.pdf

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