Relay Switches

Discussion in 'The Projects Forum' started by pyrohiroshi, Mar 1, 2011.

  1. pyrohiroshi

    Thread Starter New Member

    Mar 4, 2009
    3
    0
    Now, I've already got numerous problems with my design. I didn't do the math and instead used the Java Circuit Simulator applet to complete the design. This of course resulted in a 5V input which I'm gonna have to figure out how to do. Should've probably used something smaller but as a result I've already purchased two relay switches with a 5V, 1A input for the coil.

    Secondly I bought 4 2V LEDs and 10 10Ohm resistors.

    Now I'll deal with the math and buy the extra components if I need to after I re-do the design but what bothers me is the little diagram beneath the Relay Switches that I got. They're 8-pin switches which immediately made me think that there are two switches contained with the the Relay itself. I'm probably just not going to use the second switch if it can't be switched seperately, which is fine for now. I'll replace the component later with the correct one. But what really confuses me is the bellow diagram on the switch. It just doesn't fit with the picture that I have of how a switch works in my mind.
    [​IMG][​IMG]
    The first two connectors (NOT shown) are clearly for the coil but I don't understand how the above becomes switches.

    Doesn't anyone have an idea?
    [​IMG]
     
    Last edited: Mar 1, 2011
  2. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    Do you have a manufacturer name and part number for the relays?
    If so, try to find a datasheet for them.
     
  3. pyrohiroshi

    Thread Starter New Member

    Mar 4, 2009
    3
    0
    Thanks. I'll do that. Unfortunately I left the relay at home. Guess I'll have to wait till tomorrow.
     
  4. Adjuster

    Well-Known Member

    Dec 26, 2010
    2,147
    300
    I know this is not key to answering your question, but what are you trying to design? There may be more help people could give if you supplied more information.
     
  5. pyrohiroshi

    Thread Starter New Member

    Mar 4, 2009
    3
    0
    I'm trying to build a little puzzle.

    The concept is that there are 25 different buttons and 5 buttons have to be pressed in sequence to activate a magnetic unlocking mechanism. I personally understand that this would be extremely easy if I was using a pic chip and a grid layout for my buttons but since this is my first real circuit I decided to stick with some generic components instead.

    So what happens in my circuit...

    First of all, once the power is connected an led is lit. This LED must stay lit while power is supplied therefore I put it in it's own complete circuit.

    Second, when the first button is pressed a relay switch is thrown after which the relay has to power itself to keep the switch thrown. (Momentary buttons are to be used). It will then power the second relay as well.

    Now I imagine that this is where my problem comes in as for some reason the second relay only gets 2.5V. I imagine this is because once the relay switch powers itself and pumps power to the second switch the 5V is then split? Haven't figured out how to solve this problem yet... but I haven't really sat with the problem either. It works perfectly in my simulation.

    I'll post the code here for the simulation.

    Zip archive of simulation applet. (double-click on circuit.jar to run)

    Code ( (Unknown Language)):
    1. $ 1 5.0E-6 1.9265835257097934 77 5.0 50
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    6. 178 896 176 896 256 0 1 0.2 0.15067385747467077 0.05 1000000.0 0.02 20.0
    7. v 288 256 288 176 0 0 40.0 5.0 0.0 0.0 0.5
    8. w 288 176 288 144 0
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    97.  
     
    Last edited: Mar 11, 2011
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