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how to convert the signal received by Tsop1738 ir receiver to steady output?

Discussion in 'General Electronics Chat' started by Mashare, Jun 10, 2018.

  1. Mashare

    Mashare New Member

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    Thank you for your appreciated effort :)
     
  2. Mashare

    Mashare New Member

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    I test the circuit using simulator ..
    when the input signal duty cycle about 6% it worked fine..


    dc6.png


    but if the duty cycle about 94% as my input signal the output as the following ,is there any problem ?

    dc93.jpg
     
  3. crutschow

    crutschow Well-Known Member Most Helpful Member

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    Yes, I had your duty-cycle reversed in my simulation. :oops:
    The problem was due to feedback from the input to the Ref voltage.
    To cure the problem add a 1uF or larger capacitor from Ref to ground.
    Simulation below with added C3:

    upload_2018-6-13_8-48-7.png
     
  4. dave miyares

    Dave New Member

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  5. Mashare

    Mashare New Member

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    it works ... Thank you :)

    which missing pulse circuit is more efficient ?using lm393\339 or using 555 timer ?

    Regards :)
     
  6. crutschow

    crutschow Well-Known Member Most Helpful Member

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    You need to define "efficient" in this context.
    They both perform the same function about equally well.
     
  7. Mashare

    Mashare New Member

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    thank you :)
     

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