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Single Led flasher circuit.

Discussion in 'LEDs and Optoelectronics' started by Daniedp, Aug 28, 2021.

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  1. Daniedp

    Daniedp

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    Aug 22, 2021
    Hallo guys.
    I need a simple single Led flasher circuit that can operate from a 9v and 12v source.
    Thanks in advance.
    Ps this Must work on veroboard.
     
  2. Nanren888

    Nanren888

    527
    156
    Nov 8, 2015
    Various 555 timer versions will run at those voltages. (google 555 led flasher?)
    .
    Also an old favourite UJT. (Google ujt led flasher)
    .
    Google it?
     
    bertus likes this.
  3. Daniedp

    Daniedp

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    Aug 22, 2021
    Thanks not going to use 555 but rather use the ujt type circuit. Question is if I can find the parts at my local electronics shop as they dont always keep the parts with certain codes. But I will Google some more in ujt circuits.
    Many thanks.
     
  4. Nanren888

    Nanren888

    527
    156
    Nov 8, 2015
    UJTs are not really a modern component, but 2N2646 is still relatively common, I suspect.
    There are also flashers based on bipolar transistors that are almost as simple.
    .
    If you don't mind winding a coil, there's also something called a Joule thief.
     
  5. Bluejets

    Bluejets

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    Oct 5, 2014
  6. Daniedp

    Daniedp

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    Aug 22, 2021
    Thanks all.
    Any circuits you know works?
    Spend afternoon on a Google circuit which to no surprise again doesn't work
     
  7. bertus

    bertus Moderator

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    Nov 8, 2019
  8. Bluejets

    Bluejets

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    Oct 5, 2014
    Didn't look at my link then...??
     
    Nanren888 likes this.
  9. bertus

    bertus Moderator

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    Nov 8, 2019
  10. Daniedp

    Daniedp

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    Aug 22, 2021
    Yes I wish I could get them but I am 100's of km away from my nearest electronics shop. That's why I struggling with this type of circuits.
     
  11. Daniedp

    Daniedp

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    0
    Aug 22, 2021
    Thanks again I am working long hours so pardon me if I don't respond immediately.
     
  12. Daniedp

    Daniedp

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    0
    Aug 22, 2021
    Just had a look a million thanks again. Wish everyone can respond as positively as you and the others.
     
  13. Daniedp

    Daniedp

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    Aug 22, 2021
  14. bertus

    bertus Moderator

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    Nov 8, 2019
    Hello,

    No, but you have a country given.

    Bertus
     
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