Need help setting up switch on breadboard

Discussion in 'Homework Help' started by droggie, Oct 21, 2012.

  1. droggie

    Thread Starter Member

    Oct 21, 2012
    137
    1
    Basically I would like to be able to switch an LED on and off. But for some reason when I push the switch it turns off, I would like to push the switch so it turns on. I cannot upload images so here is an image of the current circuit I have set up. Can some please help me trouble shoot?


    http://postimage.org/image/pxp0ff4nl/
     
  2. bertus

    Administrator

    Apr 5, 2008
    15,648
    2,346
    Hello,

    Are you aware how a breadboard is connected inside?
    Have a look at the attached PDF.

    For the switch, I have this drawing:

    [​IMG]

    Bertus
     
  3. droggie

    Thread Starter Member

    Oct 21, 2012
    137
    1
    I am aware of how they work. Am I supposed to connect one positive wire from the power supply or two? Same for the negative? That is where I am confused.
     
  4. bertus

    Administrator

    Apr 5, 2008
    15,648
    2,346
    Hello,

    Here is the basic schematic on how to connect the led and battery:

    [​IMG]

    The resistor can be separate or in the led, when it is designed for a special voltage.

    Bertus
     
  5. droggie

    Thread Starter Member

    Oct 21, 2012
    137
    1
    Thank you for your help. I have managed to connect them. I have attached another photo of my breadboard. I am not sure if the resistor is connected properly would you be able to tell me? I do not have a multimeter handy at the moment.

    http://postimage.org/image/aftu4vkbv/
     
  6. bertus

    Administrator

    Apr 5, 2008
    15,648
    2,346
    Hello,

    Here I have breadboarded the circuit myself:

    [​IMG]

    I have tested the circuit using a poweradapter.

    Bertus
     
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