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NEED A HELP TO CONTROL OUTDOOR LAMP ON/OFF USING LDR?

Discussion in 'General Electronics Chat' started by emb, Nov 27, 2017.

  1. emb

    emb Member

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    Hi

    i need to control the outdoor lamps using ldr without using controller.

    i need to use triac instead a relay :)

    how can i do that ?

    Regards
     
  2. Externet

    Externet Member

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    Last edited: Nov 27, 2017
  3. alec_t

    alec_t Well-Known Member Most Helpful Member

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    Is this a school/college project?
     
  4. dave

    Dave New Member

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  5. emb

    emb Member

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    thanks alot :)

    i dont need a ready made one :)




    no :)
     
  6. audioguru

    audioguru Well-Known Member Most Helpful Member

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    Old solar garden lights used an LDR but they got sunburned after 2 years outside. New solar garden lights use the glass-covered solar panel to detect light and dark. Old solar panels with a plastic cover also got sunburned and failed after a couple of years.
     
    • Informative Informative x 1
  7. emb

    emb Member

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    thank you :)

    I need to build the circuit for education purposes :)

    I train a group of electrical technicians in the field of home electrical wiring.

    I want to build the circuit because its components are available to me :)

    regards
     
  8. hyedenny

    hyedenny Member

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    I'm glad you're not my teacher.
     
  9. emb

    emb Member

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    thank you :)

    I will be glad if you teach me .

    Regards ^_^
     
    Last edited by a moderator: Nov 27, 2017
  10. Colin

    Colin Member

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    So am I
     
  11. hyedenny

    hyedenny Member

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    I'm very sorry -- I'm not qualified for special-ed.
     
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  12. Externet

    Externet Member

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    Fine, buy one as pictured in post #4 ; dismantle it to pieces. Now you have ALL the parts to build one to train all your technicians explaining how to build one...
     
  13. AnalogKid

    AnalogKid Well-Known Member

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  14. Triode

    Triode Member

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    Have you tried a web search for "photoresistor relay circuit"

    Here is one of the ones that comes up right away when I do that

    [​IMG]

    I just noticed you said Triac, just a second...

    I also get a lot of results with "photoresistor triac circuit" I picked one that has specific component numbers. If some components are hard to get where you live, there are at least 50 results you could browse to find one that suits you.

    [​IMG]
     

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