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What does this circuit do?

  1. Oct 2, 2015 #1
    I have found this circuit and I was wondering what it did. Does it control how long a motor is running?https://www.google.com/search?q=6+volt+timer+55+motor+control+circuit&safe=strict&biw=1607&bih=834&source=lnms&tbm=isch&sa=X&ved=0CAcQ_AUoAmoVChMI28KE9-KkyAIVkKWICh2bxQ23#imgrc=TVAXCdSBnuQRPM%3A
     
  2. jcsd
  3. Oct 2, 2015 #2

    sophiecentaur

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    No attachment?? At least I can't find it.
     
  4. Oct 3, 2015 #3
    No attachment
     
  5. Oct 3, 2015 #4

    sophiecentaur

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    Which circuit? I can't see one.
     
  6. Oct 3, 2015 #5
    This circuit allowed you to change the speed of a motor by using 555 as a PWM generator. The speed is changing from almost 0 RPM up to the maximum RPM the motor can run.
     
  7. Oct 3, 2015 #6

    phinds

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    What browser are you using that you are able to see the attachment that the rest of us can't see ?
     
  8. Oct 3, 2015 #7
  9. Oct 3, 2015 #8

    phinds

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    Thanks. What is "BB code" ?
     
  10. Oct 3, 2015 #9

    Hesch

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    I have had this problem too, inserting some image:

    Just this
    https://www.physicsforums.com/attachments/proxy-png.89725/?temp_hash=8db6cd77134e9c196af8ceda17abd892 [Broken]
    will be inserted. But if I edit my post, I can see the full image.
     
    Last edited by a moderator: May 7, 2017
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