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[LOGIC GATES] Constructing Ladders.

  1. Feb 13, 2010 #1
    Hey guys I have a question that is confusing me.

    It is mentioned that the N.C -[/]- (normally closed) contact is similar to a Logical invertor (NOT).

    How is a --|NOT|-- similar to a --[/]-- contact ?

    Can someone please explain this with diagrams ?

    Thank you very much !!

    I am asking this because I want to know if this model is correct :

    Son = On Switch
    Soff= Off Switch
    Lon = ON light
    Loff= OFF light
    M= Motor

    The on switch should turn on the Motor and ON light. The off button should turn off the Motor and ON light, AND turn on the OFF light.

    http://img134.imageshack.us/img134/4277/imag0194.jpg [Broken]



    NOTE : This isnt homework, this is an inquiry.
     
    Last edited by a moderator: May 4, 2017
  2. jcsd
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