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Thread: SCR Motor Speed Control made from salvaged parts

  1. #21
    pfredX1's Avatar
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    If you want to buy parts there has never been a better time for that than now. Today we have the Internet. So you can get parts shipped right to your door cheap. Mostly I buy direct from China. There's some waiting involved with that but the prices can't be beat. I'm patient. Right now I could get 10 more of the triacs I used in the dimmers I made for $1.64. They're probably counterfeit but they still work just fine. https://www.aliexpress.com/item/10PC...844754301.html

  2. #22
    nhengineer's Avatar
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    Schematic?

    Paul Jones, It would be appreciated if you'd share of provide a link for the schemagic for this project.

  3. #23
    pfredX1's Avatar
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    Quote Originally Posted by nhengineer View Post
    Paul Jones, It would be appreciated if you'd share of provide a link for the schemagic for this project.
    Just looking at the circuit board I'd say there are better schematics for making SCR phase fired converters today. We have higher performing parts we can use now. I found this circuit works well http://i.imgur.com/GE3ZXqP.png That's all you really need. It can even handle inductive motor loads. I've run a 600W router on one that I made. You can even get a heavier triac for larger loads. Here's the same circuit with a snubber http://i.imgur.com/iiuSn8H.png Though with the right triac you don't really need a snubber.

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    Paul Jones (09-11-2018)

  5. #24
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    Thank you.


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    Paul Jones (09-11-2018)

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