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Type: Posts; User: elmahboule

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  1. Replies
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    Closed: Need to know IC name

    Hello all
    I have damaged IC in the screen board of ete video intercom system type T-708c.

    please, I want know its name.

    See attached image.
  2. Closed: Re: Transformer Problem

    OK karesz thank you
    I will try to
  3. Closed: Re: Transformer Problem

    I can not reduce the winding. is difficult
  4. Closed: How to 9VAC secondary in a transformer (now I have 17VAC)

    have a transformer: primary and secondary 220VAC 17VAC
    But I need 9VAC secondary (outlet)
    So how

    Help me please
  5. Replies
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    Closed: Re: reverse the sign of the direct current

    yes " keith1200rs "

    R1 = R2

    thank you, But I do not know the picture of integrated circuit
    So can you give me the picture of this integrated circuit. " am_op "
  6. Replies
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    Closed: Re: reverse the sign of the direct current

    thank you " karesz "
    Now I understand
    I must use the am_op
    as this http://www.sonelec-musique.com/images/theorie_aop_ampli_inv.gif
  7. Replies
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    2,239

    Closed: Re: reverse the sign of the direct current

    see my freind
    the drive speed has only 1 inbut of direction, if the value is +1VDC we have a direction, if it is -1VDC we get the second direction.
    I have 2 Potentiometers, the value of output of...
  8. Replies
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    Closed: Re: reverse the sign of the direct current

    thank you my Friend "keith1200rs"

    I have a +1VDC voltage, so from the this tension, I want the -1VDC, to change the direction of rotation of a drive speed.
    So I want to reverse the voltage from...
  9. Replies
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    2,239

    Closed: reverse the sign of the direct current

    hello
    I want to reverse the sign of the direct current
    I want to reverse +1 VDC to -1Vdc
    Help me please
  10. Closed: step 7 in 7 steps +download

    other link



    http://www.4shared.com/file/90460204/5e8d3e9f/Step_7_in_7_Steps.html
  11. Closed: step7 book

    take my friend


    http://www.4shared.com/file/90460204/5e8d3e9f/Step_7_in_7_Steps.html
  12. Closed: step 7 in 7 steps download

    I will give a best book of step 7 ( step 7 in 7 steps )

    it is 4 parts

    http://www.zshare.net/download/56355369042ee1bf/
    ...
  13. Closed: simatic book

    Hello if anyone has these books in english please upload it. Many thanks.

    Automating with STEP 7 in LAD and FBD
    Hans Berger

    And

    STEP 7 IN 7 STEPS
    Clarence T. Jones
  14. Closed: Looking for the newest version of Schemaplic software

    Hi

    I need the last version of software "schemaplic"

    thanks +++++
  15. Replies
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    Closed: calculation of motor speed

    OK.....If you have 125Hz on one hall sensor and a 4 pole motor, your result seems correct.
  16. Closed: Need materials to learn using Asphalt Mixer LJB1500

    Hi
    Please I need a few lessons about a Chinese machine named “LJB1500”
    It is a machine of Asphalt Mixer.
    and I need especially the program PLC of this machine.
    And thank you +++
  17. Replies
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    Closed: EXEMPLES PLC

    I give you a lotof exemples of PLC

    password of rar file : www.edaboard.com
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