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I am trying to get fimilar with electrical components. I did some BG

  1. Sep 15, 2011 #1
    I am trying to get fimilar with electrical components. I did some BG research on relays. Does this make sense.

    1.My systems needs a switch to control a component so that is why I need a relay. It is a micro-switch that will move towards its position(Normally open or Normally Closed) depending on the incoming power over the coil based on how it is wired to NO and NC to the component I am trying to control with the switch.

    2. My basic relay diagram below controlling a light(Wired for normally open)
    -No power switch is off, Power switch is on.
    Switch(Rated at different Power)-<>-----Relay----<>-----Light(At a different Power)
    incoming power-->Power of switch-----------------<>-----Relay----<>-----power of light

    3. If hooked up in Normally open and I power it on do I even need a switch to turn the light on if it goes on autmatically? If so then would I hook it up thru Normally closed to use a switch to turn it on and off??

    This is all new to me so lead me in the right direction so I can pick and choose relays for a project!! even the most basic!!
    Does both my statements make no sense?????
     
  2. jcsd
  3. Oct 8, 2011 #2
    Re: relays

    Hi,
    I do not know anything about relays. I been trying for days to hook up a relay to turn on a light using an Axis camera with an I/O switch. This is the relay http://search.digikey.com/scripts/Dk...536&DPU=submit [Broken]
    This is the manual for the Axis 207 207W camera http://www.axis.com/files/manuals/um...58_en_1208.pdf [Broken]. the camera is 3.3 volt with a max 50ma, I don't even know if this is correct relay. I’m willing to pay someone for help me make this work.

    This company http://www.ibou.fr/cameras/cameras.html makes something that works but they are asking 70 euro=110 dollars plus 30 shipping and the relay cost is only 4 dollars. For a relay that cost 5 dollars. I know they need to make a profit but this outrageous.


    Thank you
     
    Last edited by a moderator: May 5, 2017
  4. Oct 9, 2011 #3

    davenn

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    Gold Member

    Re: relays

    kardamyla .... please dont hijack other people's threads, its rude, start your own one :)

    math111 .... been rereading your post and trying to clarify it :)

    I think what you are getting at is you have a low voltage circuit (say 12VDC) that is going to activate a relay that is capable of switching mains voltage say 120 or 220VAC (depending on where in the world you are ) is that correct?

    maybe something like this circuit I have drawn ?

    attachment.php?attachmentid=39817&stc=1&d=1318210982.gif

    cheers
    Dave
     

    Attached Files:

  5. Oct 10, 2011 #4
    Re: relays

    Sorry about that
     
  6. Oct 12, 2011 #5

    davenn

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    Gold Member

    Re: relays

    oops mad a major boo boo in that circuit... too early in the morning and before my first cup of coffee ;)
    lets try again.....

    attachment.php?attachmentid=39929&stc=1&d=1318469497.gif



    cheers
    Dave
     

    Attached Files:

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